diff --git a/custom_nodes/websocket_image_save.py b/custom_nodes/websocket_image_save.py
index 5aa57364225..09fe1bde5f6 100644
--- a/custom_nodes/websocket_image_save.py
+++ b/custom_nodes/websocket_image_save.py
@@ -37,6 +37,7 @@ def save_images(self, images):
 
         return {}
 
+    @classmethod
     def IS_CHANGED(s, images):
         return time.time()