diff --git a/src/battle_main.c b/src/battle_main.c
index 47a51d0956..6278d803ee 100644
--- a/src/battle_main.c
+++ b/src/battle_main.c
@@ -487,10 +487,9 @@ static void CB2_InitBattleInternal(void)
     else
     {
         gBattle_WIN0V = WIN_RANGE(DISPLAY_HEIGHT / 2, DISPLAY_HEIGHT / 2 + 1);
+        ScanlineEffect_Clear();
         if (B_FAST_INTRO_NO_SLIDE == FALSE && !gTestRunnerHeadless)
         {
-            ScanlineEffect_Clear();
-
             for (i = 0; i < DISPLAY_HEIGHT / 2; i++)
             {
                 gScanlineEffectRegBuffers[0][i] = 0xF0;