diff --git a/src/field_effect.c b/src/field_effect.c
index 369239f6b..789b5a803 100644
--- a/src/field_effect.c
+++ b/src/field_effect.c
@@ -3816,7 +3816,7 @@ static void SpriteCB_DeoxysRockFragment(struct Sprite* sprite)
         sprite->y += 12;
         break;
     }
-    if ((u16)(sprite->x + 4) > DISPLAY_WIDTH + 8 || sprite->y < -4 || sprite->y > DISPLAY_HEIGHT + 4)
+    if (sprite->x < -4 || sprite->x > DISPLAY_WIDTH + 4 || sprite->y < -4 || sprite->y > DISPLAY_HEIGHT + 4)
         DestroySprite(sprite);
 }