4 files changed, 6 insertions, 6 deletions
diff --git a/engine/battle/ai/move.asm b/engine/battle/ai/move.asm
index 27a8ad5a5..7ccb20972 100755
--- a/engine/battle/ai/move.asm
+++ b/engine/battle/ai/move.asm
@@ -186,7 +186,7 @@ AIChooseMove: ; 440ce
 .ChooseMove:
 	ld hl, Buffer1
 	call Random
-	maskbits NUM_MOVES +- 1
+	maskbits NUM_MOVES
 	ld c, a
 	ld b, 0
 	add hl, bc
diff --git a/engine/battle/battle_transition.asm b/engine/battle/battle_transition.asm
index 1409ddc37..452339e81 100644
--- a/engine/battle/battle_transition.asm
+++ b/engine/battle/battle_transition.asm
@@ -640,7 +640,7 @@ StartTrainerBattle_LoadPokeBallGraphics: ; 8c5dc (23:45dc)
 .cgb
 	ld hl, .daypals
 	ld a, [TimeOfDayPal]
-	maskbits NUM_DAYTIMES +- 1
+	maskbits NUM_DAYTIMES
 	cp DARKNESS_F
 	jr nz, .daytime
 	ld hl, .nightpals
diff --git a/engine/battle/core.asm b/engine/battle/core.asm
index 5d79f5fd5..e1c5f331f 100644
--- a/engine/battle/core.asm
+++ b/engine/battle/core.asm
@@ -6031,7 +6031,7 @@ ParseEnemyAction: ; 3e7c1
 .loop2
 	ld hl, EnemyMonMoves
 	call BattleRandom
-	maskbits NUM_MOVES +- 1
+	maskbits NUM_MOVES
 	ld c, a
 	ld b, 0
 	add hl, bc
diff --git a/engine/battle/effect_commands.asm b/engine/battle/effect_commands.asm
index 801ce211e..c1bc3752a 100644
--- a/engine/battle/effect_commands.asm
+++ b/engine/battle/effect_commands.asm
@@ -932,7 +932,7 @@ BattleCommand_CheckObedience: ; 343db
 
 .RandomMove:
 	call BattleRandom
-	maskbits NUM_MOVES +- 1
+	maskbits NUM_MOVES
 
 	cp b
 	jr nc, .RandomMove
@@ -4387,7 +4387,7 @@ BattleCommand_SleepTalk: ; 35b33
 .sample_move
 	push hl
 	call BattleRandom
-	maskbits NUM_MOVES +- 1
+	maskbits NUM_MOVES
 	ld c, a
 	ld b, 0
 	add hl, bc
@@ -8204,7 +8204,7 @@ BattleCommand_Conversion: ; 3707f
 .done
 .loop3
 	call BattleRandom
-	maskbits NUM_MOVES +- 1
+	maskbits NUM_MOVES
 	ld c, a
 	ld b, 0
 	ld hl, StringBuffer1