diff --git a/include/birch_pc.h b/include/birch_pc.h
index d5b8cc7e85..5e0e8d9c16 100644
--- a/include/birch_pc.h
+++ b/include/birch_pc.h
@@ -1,6 +1,6 @@
 #ifndef GUARD_BIRCH_PC_H
 #define GUARD_BIRCH_PC_H
 
-const u8 *GetPokedexRatingText(u32 count);
+const u8 *GetPokedexRatingText(u16 count);
 
 #endif // GUARD_BIRCH_PC_H
diff --git a/src/birch_pc.c b/src/birch_pc.c
index c2adaa0935..85a9fc074e 100644
--- a/src/birch_pc.c
+++ b/src/birch_pc.c
@@ -48,7 +48,7 @@ static const u8 *const sBirchDexRatingTexts[BIRCH_DEX_STRINGS] =
 };
 
 // This shows your Hoenn Pokedex rating and not your National Dex.
-const u8 *GetPokedexRatingText(u32 count)
+const u8 *GetPokedexRatingText(u16 count)
 {
     u32 i, j;
     u16 maxDex = HOENN_DEX_COUNT - 1;