diff --git a/flixel/graphics/tile/FlxDrawQuadsItem.hx b/flixel/graphics/tile/FlxDrawQuadsItem.hx
index 5b502f6dcd..bffa105d72 100644
--- a/flixel/graphics/tile/FlxDrawQuadsItem.hx
+++ b/flixel/graphics/tile/FlxDrawQuadsItem.hx
@@ -136,7 +136,8 @@ class FlxDrawQuadsItem extends FlxDrawBaseItem<FlxDrawQuadsItem>
 
 		setParameterValue(shader.hasTransform, true);
 		setParameterValue(shader.hasColorTransform, colored || hasColorOffsets);
-		setParameterValue(shader.premultiplyAlpha, !shader.bitmap.input.readable && shader.bitmap.input.__texture != null && shader.bitmap.input.__texture.__premultiplyAlpha);
+		if (shader?.premultiplyAlpha != null)
+			setParameterValue(shader.premultiplyAlpha, !shader.bitmap.input.readable && shader.bitmap.input.__texture != null && shader.bitmap.input.__texture.__premultiplyAlpha);
 
 		camera.canvas.graphics.overrideBlendMode(blend);
 		camera.canvas.graphics.beginShaderFill(shader);