diff --git a/Sprites/NPCs/mermaid.asm b/Sprites/NPCs/mermaid.asm
index 8996109..2d5c570 100644
--- a/Sprites/NPCs/mermaid.asm
+++ b/Sprites/NPCs/mermaid.asm
@@ -239,10 +239,10 @@ Sprite_Mermaid_Main:
 Librarian_CheckForAllMaps:
 {
   LDA.l DNGMAP1
-  CMP.w #$FFFC
+  CMP.b #$FC
   BNE .not_all_maps
   LDA.l DNGMAP2
-  CMP.w #$FFFF
+  CMP.b #$FF
   BEQ .all_maps
   .not_all_maps
   CLC