diff --git a/src/battle_transition.c b/src/battle_transition.c
index 3e86fcf51..e4201192f 100644
--- a/src/battle_transition.c
+++ b/src/battle_transition.c
@@ -1961,9 +1961,10 @@ static bool8 Phase2_Ripple_Func2(struct Task *task)
 
     for (i = 0; i < 160; i++, r4 += r8)
     {
-        // todo: fix the asm
         s16 var = r4 >> 8;
-        asm("");
+        
+		++var;
+		--var;
         gScanlineEffectRegBuffers[0][i] = sTransitionStructPtr->field_16 + Sin(var, r3);
     }