diff --git a/constants/map_data_constants.asm b/constants/map_data_constants.asm
index d35966b28..11063bec0 100644
--- a/constants/map_data_constants.asm
+++ b/constants/map_data_constants.asm
@@ -4,7 +4,7 @@ GROUP_NONE EQU 0
 MAP_NONE   EQU 0
 
 
-; map header struct members (see data/maps/definitions.asm)
+; map_def struct members (see data/maps/definitions.asm)
 	const_def
 	const MAPDEF_MAPDATA_BANK ; 0
 	const MAPDEF_TILESET      ; 1
diff --git a/data/maps/definitions.asm b/data/maps/definitions.asm
index ccc723177..e9afbf31c 100644
--- a/data/maps/definitions.asm
+++ b/data/maps/definitions.asm
@@ -15,7 +15,7 @@ map_def: MACRO
 ENDM
 
 MapGroupPointers::
-; pointers to the first map header of each map group
+; pointers to the first map_def of each map group
 	dw MapGroup_Olivine     ;  1
 	dw MapGroup_Mahogany    ;  2
 	dw MapGroup_Dungeons    ;  3
diff --git a/home/audio.asm b/home/audio.asm
index 7508d569c..c7e49721a 100644
--- a/home/audio.asm
+++ b/home/audio.asm
@@ -142,7 +142,7 @@ PlayMusic2:: ; 3bbc
 
 
 PlayCry:: ; 3be3
-; Play cry header de.
+; Play cry de.
 
 	push hl
 	push de
diff --git a/home/cry.asm b/home/cry.asm
index 204b02ba4..c671c5fd0 100644
--- a/home/cry.asm
+++ b/home/cry.asm
@@ -55,7 +55,7 @@ _PlayMonCry:: ; 37e2
 ; 37f3
 
 LoadCry:: ; 37f3
-; Load cry header bc.
+; Load cry bc.
 
 	call GetCryIndex
 	ret c