diff --git a/scripts/postprocessing_upscale.py b/scripts/postprocessing_upscale.py
index 0d7a19c62b9..9628c4e9a31 100644
--- a/scripts/postprocessing_upscale.py
+++ b/scripts/postprocessing_upscale.py
@@ -153,7 +153,7 @@ def process(self, pp: scripts_postprocessing.PostprocessedImage, upscale_enabled
         pp.info["Postprocess upscaler"] = upscaler1.name
 
         if upscaler2 and upscaler_2_visibility > 0:
-            second_upscale = self.upscale(pp.image, pp.info, upscaler2, upscale_mode, upscale_by, upscale_to_width, upscale_to_height, upscale_crop)
+            second_upscale = self.upscale(pp.image, pp.info, upscaler2, upscale_mode, upscale_by, max_side_length, upscale_to_width, upscale_to_height, upscale_crop)
             upscaled_image = Image.blend(upscaled_image, second_upscale, upscaler_2_visibility)
 
             pp.info["Postprocess upscaler 2"] = upscaler2.name