diff --git a/engine/events/magnet_train.asm b/engine/events/magnet_train.asm
index 585912391..795cfe654 100755
--- a/engine/events/magnet_train.asm
+++ b/engine/events/magnet_train.asm
@@ -262,19 +262,19 @@ SetMagnetTrainPals: ; 8cdc3
 
 	; bushes
 	hlbgcoord 0, 0
-	ld bc, 4 bgrows
+	ld bc, 4 * BG_MAP_WIDTH
 	ld a, $2
 	call ByteFill
 
 	; train
 	hlbgcoord 0, 4
-	ld bc, 10 bgrows
+	ld bc, 10 * BG_MAP_WIDTH
 	xor a
 	call ByteFill
 
 	; more bushes
 	hlbgcoord 0, 14
-	ld bc, 4 bgrows
+	ld bc, 4 * BG_MAP_WIDTH
 	ld a, $2
 	call ByteFill
 
diff --git a/engine/title.asm b/engine/title.asm
index 2ea588cd0..0ca8cfeef 100644
--- a/engine/title.asm
+++ b/engine/title.asm
@@ -32,7 +32,7 @@ _TitleScreen: ; 10ed67
 
 ; Clear screen palettes
 	hlbgcoord 0, 0
-	ld bc, 20 bgrows
+	ld bc, 20 * BG_MAP_WIDTH
 	xor a
 	call ByteFill
 
@@ -43,7 +43,7 @@ _TitleScreen: ; 10ed67
 
 ; line 0 (copyright)
 	hlbgcoord 0, 0, vBGMap1
-	ld bc, 1 bgrows
+	ld bc, BG_MAP_WIDTH
 	ld a, 7 ; palette
 	call ByteFill
 
@@ -54,27 +54,27 @@ _TitleScreen: ; 10ed67
 
 ; lines 3-4
 	hlbgcoord 0, 3
-	ld bc, 2 bgrows
+	ld bc, 2 * BG_MAP_WIDTH
 	ld a, 2
 	call ByteFill
 ; line 5
 	hlbgcoord 0, 5
-	ld bc, 1 bgrows
+	ld bc, BG_MAP_WIDTH
 	ld a, 3
 	call ByteFill
 ; line 6
 	hlbgcoord 0, 6
-	ld bc, 1 bgrows
+	ld bc, BG_MAP_WIDTH
 	ld a, 4
 	call ByteFill
 ; line 7
 	hlbgcoord 0, 7
-	ld bc, 1 bgrows
+	ld bc, BG_MAP_WIDTH
 	ld a, 5
 	call ByteFill
 ; lines 8-9
 	hlbgcoord 0, 8
-	ld bc, 2 bgrows
+	ld bc, 2 * BG_MAP_WIDTH
 	ld a, 6
 	call ByteFill
 
@@ -87,7 +87,7 @@ _TitleScreen: ; 10ed67
 
 ; Suicune gfx
 	hlbgcoord 0, 12
-	ld bc, 6 bgrows ; the rest of the screen
+	ld bc, 6 * BG_MAP_WIDTH ; the rest of the screen
 	ld a, 0 | VRAM_BANK_1
 	call ByteFill
 
@@ -110,7 +110,7 @@ _TitleScreen: ; 10ed67
 
 ; Clear screen tiles
 	hlbgcoord 0, 0
-	ld bc, 64 bgrows
+	ld bc, 64 * BG_MAP_WIDTH
 	ld a, " "
 	call ByteFill
 
diff --git a/macros/coords.asm b/macros/coords.asm
index 69e85c90b..a66fc6b29 100644
--- a/macros/coords.asm
+++ b/macros/coords.asm
@@ -1,6 +1,3 @@
-screenrows EQUS "* SCREEN_WIDTH"
-bgrows     EQUS "* BG_MAP_WIDTH"
-
 hlcoord EQUS "coord hl,"
 bccoord EQUS "coord bc,"
 decoord EQUS "coord de,"
@@ -8,9 +5,9 @@ decoord EQUS "coord de,"
 coord: MACRO
 ; register, x, y[, origin]
 	if _NARG < 4
-	ld \1, (\3) screenrows + (\2) + TileMap
+	ld \1, (\3) * SCREEN_WIDTH + (\2) + TileMap
 	else
-	ld \1, (\3) screenrows + (\2) + \4
+	ld \1, (\3) * SCREEN_WIDTH + (\2) + \4
 	endc
 ENDM
 
@@ -21,25 +18,16 @@ debgcoord EQUS "bgcoord de,"
 bgcoord: MACRO
 ; register, x, y[, origin]
 	if _NARG < 4
-	ld \1, (\3) bgrows + (\2) + vBGMap0
+	ld \1, (\3) * BG_MAP_WIDTH + (\2) + vBGMap0
 	else
-	ld \1, (\3) bgrows + (\2) + \4
+	ld \1, (\3) * BG_MAP_WIDTH + (\2) + \4
 	endc
 ENDM
 
-hldims EQUS "dims hl,"
-bcdims EQUS "dims bc,"
-dedims EQUS "dims de,"
-
-dims: MACRO
-; register, width, height
-	lb \1, \3, \2
-ENDM
-
 dwcoord: MACRO
 ; x, y
 	rept _NARG / 2
-	dw (\2) screenrows + (\1) + TileMap
+	dw (\2) * SCREEN_WIDTH + (\1) + TileMap
 	shift
 	shift
 	endr
@@ -48,17 +36,17 @@ ENDM
 ldcoord_a: MACRO
 ; x, y[, origin]
 	if _NARG < 3
-	ld [(\2) screenrows + (\1) + TileMap], a
+	ld [(\2) * SCREEN_WIDTH + (\1) + TileMap], a
 	else
-	ld [(\2) screenrows + (\1) + \3], a
+	ld [(\2) * SCREEN_WIDTH + (\1) + \3], a
 	endc
 ENDM
 
 lda_coord: MACRO
 ; x, y[, origin]
 	if _NARG < 3
-	ld a, [(\2) screenrows + (\1) + TileMap]
+	ld a, [(\2) * SCREEN_WIDTH + (\1) + TileMap]
 	else
-	ld a, [(\2) screenrows + (\1) + \3]
+	ld a, [(\2) * SCREEN_WIDTH + (\1) + \3]
 	endc
 ENDM