diff --git a/ui/sd_internal/runtime.py b/ui/sd_internal/runtime.py
index 3083e3ca..d1025293 100644
--- a/ui/sd_internal/runtime.py
+++ b/ui/sd_internal/runtime.py
@@ -393,6 +393,7 @@ def do_mk_img(req: Request):
 
                                 progress['output'] = partial_images
 
+                            print(' sending progress update', json.dumps(progress))
                             yield json.dumps(progress)
 
                         if stop_processing: