diff --git a/api/onnx_web/diffusers/pipelines/upscale.py b/api/onnx_web/diffusers/pipelines/upscale.py
index 0ec0781c4..deb2c8c3f 100644
--- a/api/onnx_web/diffusers/pipelines/upscale.py
+++ b/api/onnx_web/diffusers/pipelines/upscale.py
@@ -78,7 +78,7 @@ def __init__(
             unet,
             low_res_scheduler,
             scheduler,
-            max_noise_level,
+            max_noise_level=max_noise_level,
         )
 
     def __call__(