diff --git a/src/app/core/common.cc b/src/app/core/common.cc
index 135f3365..fd2851cc 100644
--- a/src/app/core/common.cc
+++ b/src/app/core/common.cc
@@ -4,13 +4,20 @@
 
 #include <cstdint>
 #include <cstring>
+#include <fstream>
 #include <memory>
+#include <sstream>
 #include <string>
+#include <unordered_map>
 #include <vector>
 
 #include "absl/status/statusor.h"
 #include "absl/strings/str_format.h"
+#include "absl/strings/string_view.h"
 #include "app/core/constants.h"
+#include "app/gui/icons.h"
+#include "imgui/imgui.h"
+#include "imgui/misc/cpp/imgui_stdlib.h"
 
 namespace yaze {
 namespace app {
@@ -93,6 +100,40 @@ uint32_t ldle3(uint8_t const *const p_arr) { return ldle(p_arr, 3); }
 
 }  // namespace
 
+std::string UppercaseHexByte(uint8_t byte, bool leading) {
+  if (leading) {
+    std::string result = absl::StrFormat("0x%02X", byte);
+    return result;
+  }
+  std::string result = absl::StrFormat("%02X", byte);
+  return result;
+}
+std::string UppercaseHexWord(uint16_t word, bool leading) {
+  if (leading) {
+    std::string result = absl::StrFormat("0x%04X", word);
+    return result;
+  }
+  std::string result = absl::StrFormat("%04X", word);
+  return result;
+}
+std::string UppercaseHexLong(uint32_t dword) {
+  std::string result = absl::StrFormat("0x%06X", dword);
+  return result;
+}
+std::string UppercaseHexLongLong(uint64_t qword) {
+  std::string result = absl::StrFormat("0x%08X", qword);
+  return result;
+}
+
+bool StringReplace(std::string &str, const std::string &from,
+                   const std::string &to) {
+  size_t start = str.find(from);
+  if (start == std::string::npos) return false;
+
+  str.replace(start, from.length(), to);
+  return true;
+}
+
 std::shared_ptr<ExperimentFlags::Flags> ExperimentFlags::flags_;
 
 uint32_t Get24LocalFromPC(uint8_t *data, int addr, bool pc) {
diff --git a/src/app/core/common.h b/src/app/core/common.h
index 75b6701d..2cb7cd61 100644
--- a/src/app/core/common.h
+++ b/src/app/core/common.h
@@ -19,6 +19,14 @@ namespace app {
  */
 namespace core {
 
+std::string UppercaseHexByte(uint8_t byte, bool leading = false);
+std::string UppercaseHexWord(uint16_t word, bool leading = false);
+std::string UppercaseHexLong(uint32_t dword);
+std::string UppercaseHexLongLong(uint64_t qword);
+
+bool StringReplace(std::string &str, const std::string &from,
+                   const std::string &to);
+
 /**
  * @class ExperimentFlags
  * @brief A class to manage experimental feature flags.
diff --git a/src/app/core/core.cmake b/src/app/core/core.cmake
index 4afed1ab..e9a18c68 100644
--- a/src/app/core/core.cmake
+++ b/src/app/core/core.cmake
@@ -2,7 +2,6 @@ set(
   YAZE_APP_CORE_SRC
   app/core/common.cc
   app/core/controller.cc
-  app/core/labeling.cc
   app/emu/emulator.cc
   app/core/project.cc
   app/core/utils/file_util.cc
diff --git a/src/app/core/labeling.cc b/src/app/core/labeling.cc
deleted file mode 100644
index 884083a7..00000000
--- a/src/app/core/labeling.cc
+++ /dev/null
@@ -1,178 +0,0 @@
-#include "app/core/labeling.h"
-
-#include <cstdint>
-#include <fstream>
-#include <sstream>
-#include <string>
-#include <unordered_map>
-
-#include "absl/strings/str_format.h"
-
-#include "app/gui/icons.h"
-#include "imgui/imgui.h"
-#include "imgui/misc/cpp/imgui_stdlib.h"
-
-namespace yaze {
-namespace app {
-namespace core {
-
-std::string UppercaseHexByte(uint8_t byte, bool leading) {
-  if (leading) {
-    std::string result = absl::StrFormat("0x%02X", byte);
-    return result;
-  }
-  std::string result = absl::StrFormat("%02X", byte);
-  return result;
-}
-std::string UppercaseHexWord(uint16_t word, bool leading) {
-  if (leading) {
-    std::string result = absl::StrFormat("0x%04X", word);
-    return result;
-  }
-  std::string result = absl::StrFormat("%04X", word);
-  return result;
-}
-std::string UppercaseHexLong(uint32_t dword) {
-  std::string result = absl::StrFormat("0x%06X", dword);
-  return result;
-}
-std::string UppercaseHexLongLong(uint64_t qword) {
-  std::string result = absl::StrFormat("0x%08X", qword);
-  return result;
-}
-
-bool StringReplace(std::string& str, const std::string& from,
-                   const std::string& to) {
-  size_t start = str.find(from);
-  if (start == std::string::npos) return false;
-
-  str.replace(start, from.length(), to);
-  return true;
-}
-
-bool ResourceLabelManager::LoadLabels(const std::string& filename) {
-  std::ifstream file(filename);
-  if (!file.is_open()) {
-    // Create the file if it does not exist
-    std::ofstream create_file(filename);
-    if (!create_file.is_open()) {
-      return false;
-    }
-    create_file.close();
-    file.open(filename);
-    if (!file.is_open()) {
-      return false;
-    }
-  }
-  filename_ = filename;
-
-  std::string line;
-  while (std::getline(file, line)) {
-    std::istringstream iss(line);
-    std::string type, key, value;
-    if (std::getline(iss, type, ',') && std::getline(iss, key, ',') &&
-        std::getline(iss, value)) {
-      labels_[type][key] = value;
-    }
-  }
-  labels_loaded_ = true;
-  return true;
-}
-
-bool ResourceLabelManager::SaveLabels() {
-  if (!labels_loaded_) {
-    return false;
-  }
-  std::ofstream file(filename_);
-  if (!file.is_open()) {
-    return false;
-  }
-  for (const auto& type_pair : labels_) {
-    for (const auto& label_pair : type_pair.second) {
-      file << type_pair.first << "," << label_pair.first << ","
-           << label_pair.second << std::endl;
-    }
-  }
-  file.close();
-  return true;
-}
-
-void ResourceLabelManager::DisplayLabels(bool* p_open) {
-  if (!labels_loaded_) {
-    ImGui::Text("No labels loaded.");
-    return;
-  }
-
-  if (ImGui::Begin("Resource Labels", p_open)) {
-    for (const auto& type_pair : labels_) {
-      if (ImGui::TreeNode(type_pair.first.c_str())) {
-        for (const auto& label_pair : type_pair.second) {
-          std::string label_id = type_pair.first + "_" + label_pair.first;
-          ImGui::Text("%s: %s", label_pair.first.c_str(),
-                      label_pair.second.c_str());
-        }
-        ImGui::TreePop();
-      }
-    }
-
-    if (ImGui::Button("Update Labels")) {
-      if (SaveLabels()) {
-        ImGui::Text("Labels updated successfully!");
-      } else {
-        ImGui::Text("Failed to update labels.");
-      }
-    }
-  }
-  ImGui::End();
-}
-
-void ResourceLabelManager::EditLabel(const std::string& type,
-                                     const std::string& key,
-                                     const std::string& newValue) {
-  labels_[type][key] = newValue;
-}
-
-void ResourceLabelManager::SelectableLabelWithNameEdit(
-    bool selected, const std::string& type, const std::string& key,
-    const std::string& defaultValue) {
-  std::string label = CreateOrGetLabel(type, key, defaultValue);
-  ImGui::Selectable(label.c_str(), selected,
-                    ImGuiSelectableFlags_AllowDoubleClick);
-  std::string label_id = type + "_" + key;
-  if (ImGui::IsItemHovered() && ImGui::IsMouseClicked(ImGuiMouseButton_Right)) {
-    ImGui::OpenPopup(label_id.c_str());
-  }
-
-  if (ImGui::BeginPopupContextItem(label_id.c_str())) {
-    std::string* new_label = &labels_[type][key];
-    if (ImGui::InputText("##Label", new_label,
-                         ImGuiInputTextFlags_EnterReturnsTrue)) {
-      labels_[type][key] = *new_label;
-    }
-    if (ImGui::Button(ICON_MD_CLOSE)) {
-      ImGui::CloseCurrentPopup();
-    }
-    ImGui::EndPopup();
-  }
-}
-
-std::string ResourceLabelManager::GetLabel(const std::string& type,
-                                           const std::string& key) {
-  return labels_[type][key];
-}
-
-std::string ResourceLabelManager::CreateOrGetLabel(
-    const std::string& type, const std::string& key,
-    const std::string& defaultValue) {
-  if (labels_.find(type) == labels_.end()) {
-    labels_[type] = std::unordered_map<std::string, std::string>();
-  }
-  if (labels_[type].find(key) == labels_[type].end()) {
-    labels_[type][key] = defaultValue;
-  }
-  return labels_[type][key];
-}
-
-}  // namespace core
-}  // namespace app
-}  // namespace yaze
diff --git a/src/app/core/labeling.h b/src/app/core/labeling.h
deleted file mode 100644
index 282a442b..00000000
--- a/src/app/core/labeling.h
+++ /dev/null
@@ -1,54 +0,0 @@
-#ifndef YAZE_APP_CORE_LABELING_H_
-#define YAZE_APP_CORE_LABELING_H_
-
-#include <cstdint>
-#include <string>
-#include <unordered_map>
-
-#include "absl/strings/string_view.h"
-
-namespace yaze {
-namespace app {
-namespace core {
-
-std::string UppercaseHexByte(uint8_t byte, bool leading = false);
-std::string UppercaseHexWord(uint16_t word, bool leading = false);
-std::string UppercaseHexLong(uint32_t dword);
-std::string UppercaseHexLongLong(uint64_t qword);
-
-bool StringReplace(std::string& str, const std::string& from,
-                   const std::string& to);
-
-// Default types
-static constexpr absl::string_view kDefaultTypes[] = {
-    "Dungeon Names", "Dungeon Room Names", "Overworld Map Names"};
-
-struct ResourceLabelManager {
-  bool LoadLabels(const std::string& filename);
-  bool SaveLabels();
-  void DisplayLabels(bool* p_open);
-  void EditLabel(const std::string& type, const std::string& key,
-                 const std::string& newValue);
-  void SelectableLabelWithNameEdit(bool selected, const std::string& type,
-                                   const std::string& key,
-                                   const std::string& defaultValue);
-  std::string GetLabel(const std::string& type, const std::string& key);
-  std::string CreateOrGetLabel(const std::string& type, const std::string& key,
-                               const std::string& defaultValue);
-
-  bool labels_loaded_ = false;
-  std::string filename_;
-  struct ResourceType {
-    std::string key_name;
-    std::string display_description;
-  };
-
-  std::unordered_map<std::string, std::unordered_map<std::string, std::string>>
-      labels_;
-};
-
-}  // namespace core
-}  // namespace app
-}  // namespace yaze
-
-#endif  // YAZE_APP_CORE_LABELING_H_
diff --git a/src/app/core/project.cc b/src/app/core/project.cc
index 508d4ec0..406dd1cd 100644
--- a/src/app/core/project.cc
+++ b/src/app/core/project.cc
@@ -1,9 +1,16 @@
 #include "project.h"
 
+#include <fstream>
+#include <string>
+
+#include "app/gui/icons.h"
+#include "imgui/imgui.h"
+#include "imgui/misc/cpp/imgui_stdlib.h"
+
 namespace yaze {
 namespace app {
 
-absl::Status Project::Open(const std::string &project_path) {
+absl::Status Project::Open(const std::string& project_path) {
   filepath = project_path;
   name = project_path.substr(project_path.find_last_of("/") + 1);
 
@@ -54,5 +61,128 @@ absl::Status Project::Save() {
   return absl::OkStatus();
 }
 
+bool ResourceLabelManager::LoadLabels(const std::string& filename) {
+  std::ifstream file(filename);
+  if (!file.is_open()) {
+    // Create the file if it does not exist
+    std::ofstream create_file(filename);
+    if (!create_file.is_open()) {
+      return false;
+    }
+    create_file.close();
+    file.open(filename);
+    if (!file.is_open()) {
+      return false;
+    }
+  }
+  filename_ = filename;
+
+  std::string line;
+  while (std::getline(file, line)) {
+    std::istringstream iss(line);
+    std::string type, key, value;
+    if (std::getline(iss, type, ',') && std::getline(iss, key, ',') &&
+        std::getline(iss, value)) {
+      labels_[type][key] = value;
+    }
+  }
+  labels_loaded_ = true;
+  return true;
+}
+
+bool ResourceLabelManager::SaveLabels() {
+  if (!labels_loaded_) {
+    return false;
+  }
+  std::ofstream file(filename_);
+  if (!file.is_open()) {
+    return false;
+  }
+  for (const auto& type_pair : labels_) {
+    for (const auto& label_pair : type_pair.second) {
+      file << type_pair.first << "," << label_pair.first << ","
+           << label_pair.second << std::endl;
+    }
+  }
+  file.close();
+  return true;
+}
+
+void ResourceLabelManager::DisplayLabels(bool* p_open) {
+  if (!labels_loaded_) {
+    ImGui::Text("No labels loaded.");
+    return;
+  }
+
+  if (ImGui::Begin("Resource Labels", p_open)) {
+    for (const auto& type_pair : labels_) {
+      if (ImGui::TreeNode(type_pair.first.c_str())) {
+        for (const auto& label_pair : type_pair.second) {
+          std::string label_id = type_pair.first + "_" + label_pair.first;
+          ImGui::Text("%s: %s", label_pair.first.c_str(),
+                      label_pair.second.c_str());
+        }
+        ImGui::TreePop();
+      }
+    }
+
+    if (ImGui::Button("Update Labels")) {
+      if (SaveLabels()) {
+        ImGui::Text("Labels updated successfully!");
+      } else {
+        ImGui::Text("Failed to update labels.");
+      }
+    }
+  }
+  ImGui::End();
+}
+
+void ResourceLabelManager::EditLabel(const std::string& type,
+                                     const std::string& key,
+                                     const std::string& newValue) {
+  labels_[type][key] = newValue;
+}
+
+void ResourceLabelManager::SelectableLabelWithNameEdit(
+    bool selected, const std::string& type, const std::string& key,
+    const std::string& defaultValue) {
+  std::string label = CreateOrGetLabel(type, key, defaultValue);
+  ImGui::Selectable(label.c_str(), selected,
+                    ImGuiSelectableFlags_AllowDoubleClick);
+  std::string label_id = type + "_" + key;
+  if (ImGui::IsItemHovered() && ImGui::IsMouseClicked(ImGuiMouseButton_Right)) {
+    ImGui::OpenPopup(label_id.c_str());
+  }
+
+  if (ImGui::BeginPopupContextItem(label_id.c_str())) {
+    std::string* new_label = &labels_[type][key];
+    if (ImGui::InputText("##Label", new_label,
+                         ImGuiInputTextFlags_EnterReturnsTrue)) {
+      labels_[type][key] = *new_label;
+    }
+    if (ImGui::Button(ICON_MD_CLOSE)) {
+      ImGui::CloseCurrentPopup();
+    }
+    ImGui::EndPopup();
+  }
+}
+
+std::string ResourceLabelManager::GetLabel(const std::string& type,
+                                           const std::string& key) {
+  return labels_[type][key];
+}
+
+std::string ResourceLabelManager::CreateOrGetLabel(
+    const std::string& type, const std::string& key,
+    const std::string& defaultValue) {
+  if (labels_.find(type) == labels_.end()) {
+    labels_[type] = std::unordered_map<std::string, std::string>();
+  }
+  if (labels_[type].find(key) == labels_[type].end()) {
+    labels_[type][key] = defaultValue;
+  }
+  return labels_[type][key];
+}
+
 }  // namespace app
 }  // namespace yaze
diff --git a/src/app/core/project.h b/src/app/core/project.h
index cc60d178..573de3a8 100644
--- a/src/app/core/project.h
+++ b/src/app/core/project.h
@@ -65,6 +65,34 @@ struct Project : public core::ExperimentFlags {
   std::string keybindings_file = "";
 };
 
+// Default types
+static constexpr absl::string_view kDefaultTypes[] = {
+    "Dungeon Names", "Dungeon Room Names", "Overworld Map Names"};
+
+struct ResourceLabelManager {
+  bool LoadLabels(const std::string& filename);
+  bool SaveLabels();
+  void DisplayLabels(bool* p_open);
+  void EditLabel(const std::string& type, const std::string& key,
+                 const std::string& newValue);
+  void SelectableLabelWithNameEdit(bool selected, const std::string& type,
+                                   const std::string& key,
+                                   const std::string& defaultValue);
+  std::string GetLabel(const std::string& type, const std::string& key);
+  std::string CreateOrGetLabel(const std::string& type, const std::string& key,
+                               const std::string& defaultValue);
+
+  bool labels_loaded_ = false;
+  std::string filename_;
+  struct ResourceType {
+    std::string key_name;
+    std::string display_description;
+  };
+
+  std::unordered_map<std::string, std::unordered_map<std::string, std::string>>
+      labels_;
+};
+
 class RecentFilesManager {
  public:
   RecentFilesManager() : RecentFilesManager(kRecentFilesFilename) {}
diff --git a/src/app/editor/dungeon/dungeon_editor.cc b/src/app/editor/dungeon/dungeon_editor.cc
index 817b1423..dacbf4b1 100644
--- a/src/app/editor/dungeon/dungeon_editor.cc
+++ b/src/app/editor/dungeon/dungeon_editor.cc
@@ -1,6 +1,5 @@
 #include "dungeon_editor.h"
 
-#include "app/core/labeling.h"
 #include "app/core/platform/renderer.h"
 #include "app/gfx/snes_palette.h"
 #include "app/gui/canvas.h"
diff --git a/src/app/editor/dungeon/dungeon_editor.h b/src/app/editor/dungeon/dungeon_editor.h
index 3e5536ba..f4d0ef89 100644
--- a/src/app/editor/dungeon/dungeon_editor.h
+++ b/src/app/editor/dungeon/dungeon_editor.h
@@ -2,7 +2,7 @@
 #define YAZE_APP_EDITOR_DUNGEONEDITOR_H
 
 #include "app/core/common.h"
-#include "app/core/labeling.h"
+#include "app/core/project.h"
 #include "app/editor/graphics/gfx_group_editor.h"
 #include "app/editor/graphics/palette_editor.h"
 #include "app/editor/utils/editor.h"
diff --git a/src/app/rom.h b/src/app/rom.h
index ee7733db..62018069 100644
--- a/src/app/rom.h
+++ b/src/app/rom.h
@@ -21,7 +21,7 @@
 #include "absl/strings/string_view.h"
 #include "app/core/common.h"
 #include "app/core/constants.h"
-#include "app/core/labeling.h"
+#include "app/core/project.h"
 #include "app/gfx/bitmap.h"
 #include "app/gfx/snes_palette.h"
 #include "app/gfx/snes_tile.h"
@@ -476,9 +476,7 @@ class Rom : public core::ExperimentFlags {
     return palette_groups_.dungeon_main.mutable_palette(i);
   }
 
-  core::ResourceLabelManager* resource_label() {
-    return &resource_label_manager_;
-  }
+  ResourceLabelManager* resource_label() { return &resource_label_manager_; }
   VersionConstants version_constants() const {
     return kVersionConstantsMap.at(version_);
   }
@@ -561,7 +559,7 @@ class Rom : public core::ExperimentFlags {
   std::array<gfx::Bitmap, kNumLinkSheets> link_graphics_;
 
   // Label manager for unique resource names.
-  core::ResourceLabelManager resource_label_manager_;
+  ResourceLabelManager resource_label_manager_;
 
   // All palette groups in the game
   gfx::PaletteGroupMap palette_groups_;
diff --git a/src/cli/z3ed.cmake b/src/cli/z3ed.cmake
index 2eb41974..633b3286 100644
--- a/src/cli/z3ed.cmake
+++ b/src/cli/z3ed.cmake
@@ -6,7 +6,6 @@ add_executable(
   cli/handlers/tile16_transfer.cc
   app/rom.cc
   app/core/common.cc
-  app/core/labeling.cc
   app/editor/utils/gfx_context.cc
   ${YAZE_APP_EMU_SRC}
   ${YAZE_APP_GFX_SRC}
diff --git a/src/test/CMakeLists.txt b/src/test/CMakeLists.txt
index 90570018..42662524 100644
--- a/src/test/CMakeLists.txt
+++ b/src/test/CMakeLists.txt
@@ -11,7 +11,6 @@ add_executable(
   test/zelda3/sprite_builder_test.cc
   app/rom.cc
   app/core/common.cc
-  app/core/labeling.cc
   app/editor/utils/gfx_context.cc
   ${ASAR_STATIC_SRC}
   ${YAZE_APP_CORE_SRC}