diff --git a/engine/map_setup.asm b/engine/map_setup.asm
index 8b1e3a7fe..0e391b31c 100644
--- a/engine/map_setup.asm
+++ b/engine/map_setup.asm
@@ -313,7 +313,7 @@ SuspendMapAnims: ; 154d3
 LoadObjectsRunCallback_02: ; 154d7
 	ld a, $2
 	call RunMapCallback
-	callba Function2454f
+	callba LoadObjectMasks
 	callba Function8177
 	ret
 ; 154ea (5:54ea)
diff --git a/home/map.asm b/home/map.asm
index 07f6b468b..c1a26b772 100644
--- a/home/map.asm
+++ b/home/map.asm
@@ -1170,33 +1170,33 @@ CoordinatesEventText:: ; 2702
 ; 2707
 
 
-Function2707:: ; 2707
+CheckObjectMask:: ; 2707
 	ld a, [hMapObjectIndexBuffer1]
 	ld e, a
 	ld d, $0
-	ld hl, wd81e
+	ld hl, wObjectMasks
 	add hl, de
 	ld a, [hl]
 	ret
 ; 2712
 
-Function2712:: ; 2712
+MaskObject:: ; 2712
 	ld a, [hMapObjectIndexBuffer1]
 	ld e, a
 	ld d, $0
-	ld hl, wd81e
+	ld hl, wObjectMasks
 	add hl, de
-	ld [hl], $ff
+	ld [hl], -1 ; ,masked
 	ret
 ; 271e
 
-Function271e:: ; 271e
+UnmaskObject:: ; 271e
 	ld a, [hMapObjectIndexBuffer1]
 	ld e, a
 	ld d, $0
-	ld hl, wd81e
+	ld hl, wObjectMasks
 	add hl, de
-	ld [hl], $0
+	ld [hl], 0 ; unmasked
 	ret
 ; 272a
 
diff --git a/home/map_objects.asm b/home/map_objects.asm
index 07a361340..0bfb4e98f 100644
--- a/home/map_objects.asm
+++ b/home/map_objects.asm
@@ -251,7 +251,7 @@ Function18de:: ; 18de
 	ret
 ; 18f5
 
-Function18f5:: ; 18f5
+CheckObjectTime:: ; 18f5
 	ld hl, MAPOBJECT_HOUR
 	add hl, bc
 	ld a, [hl]
@@ -336,7 +336,7 @@ Function194d:: ; 194d
 
 _CopyObjectStruct:: ; 1956
 	ld [hMapObjectIndexBuffer1], a
-	call Function271e
+	call UnmaskObject
 	ld a, [hMapObjectIndexBuffer1]
 	call GetMapObject
 	callba CopyObjectStruct
@@ -378,7 +378,7 @@ Function1985:: ; 1985
 
 DeleteObjectStruct:: ; 199f
 	call Function1967
-	call Function2712
+	call MaskObject
 	ret
 ; 19a6
 
diff --git a/main.asm b/main.asm
index f45b61f9b..98ee00c28 100644
--- a/main.asm
+++ b/main.asm
@@ -3315,9 +3315,9 @@ RefreshPlayerCoords: ; 80b8
 
 
 CopyObjectStruct:: ; 80e7
-	call Function2707
+	call CheckObjectMask
 	and a
-	ret nz
+	ret nz ; masked
 	ld hl, ObjectStructs + OBJECT_STRUCT_LENGTH * 1
 	ld a, 1
 	ld de, OBJECT_STRUCT_LENGTH
@@ -22936,22 +22936,22 @@ MenuDataHeader_0x24547: ; 0x24547
 	db 1 ; default option
 ; 0x2454f
 
-Function2454f: ; 2454f
-	ld hl, wd81e
+LoadObjectMasks: ; 2454f
+	ld hl, wObjectMasks
 	xor a
 	ld bc, NUM_OBJECTS
 	call ByteFill
 	nop
 	ld bc, MapObjects
-	ld de, wd81e
+	ld de, wObjectMasks
 	xor a
 .loop
 	push af
 	push bc
 	push de
-	call Function245a7
+	call GetObjectTimeMask
 	jr c, .next
-	call Function2457d
+	call CheckObjectFlag
 .next
 	pop de
 	ld [de], a
@@ -22967,12 +22967,12 @@ Function2454f: ; 2454f
 	jr nz, .loop
 	ret
 
-Function2457d: ; 2457d (9:457d)
+CheckObjectFlag: ; 2457d (9:457d)
 	ld hl, MAPOBJECT_SPRITE
 	add hl, bc
 	ld a, [hl]
 	and a
-	jr z, .minus_one
+	jr z, .masked
 	ld hl, MAPOBJECT_EVENT_FLAG
 	add hl, bc
 	ld a, [hli]
@@ -22983,24 +22983,25 @@ Function2457d: ; 2457d (9:457d)
 	jr nz, .check
 	ld a, e
 	cp -1
-	jr z, .zero
-	jr .minus_one
+	jr z, .unmasked
+	jr .masked
 .check
 	ld b, CHECK_FLAG
 	call EventFlagAction
 	ld a, c
 	and a
-	jr nz, .minus_one
-.zero
+	jr nz, .masked
+.unmasked
 	xor a
 	ret
-.minus_one
+
+.masked
 	ld a, -1
 	scf
 	ret
 
-Function245a7: ; 245a7 (9:45a7)
-	call Function18f5
+GetObjectTimeMask: ; 245a7 (9:45a7)
+	call CheckObjectTime
 	ld a, -1
 	ret c
 	xor a
diff --git a/wram.asm b/wram.asm
index 74eb9999d..f8a3c515b 100644
--- a/wram.asm
+++ b/wram.asm
@@ -2122,7 +2122,7 @@ wd6de::
 MapObjects:: ; d71e
 	ds OBJECT_LENGTH * NUM_OBJECTS
 
-wd81e:: ds NUM_OBJECTS
+wObjectMasks:: ds NUM_OBJECTS ; d81e
 
 VariableSprites:: ; d82e
 	ds $10