diff --git a/nodes.py b/nodes.py
index 530f4cea..0b8be765 100644
--- a/nodes.py
+++ b/nodes.py
@@ -779,7 +779,7 @@ class SaveImage:
                     metadata.add_text(x, json.dumps(extra_pnginfo[x]))
 
             file = f"{filename}_{counter:05}_.png"
-            img.save(os.path.join(full_output_folder, file), pnginfo=metadata, optimize=True)
+            img.save(os.path.join(full_output_folder, file), pnginfo=metadata, compress_level=4)
             results.append({
                 "filename": file,
                 "subfolder": subfolder,