diff --git a/openpype/lib/attribute_definitions.py b/openpype/lib/attribute_definitions.py
index b8faae8f4c..658a3fe581 100644
--- a/openpype/lib/attribute_definitions.py
+++ b/openpype/lib/attribute_definitions.py
@@ -237,8 +237,8 @@ class UISeparatorDef(UIDef):
 class UILabelDef(UIDef):
     type = "label"
 
-    def __init__(self, label):
-        super(UILabelDef, self).__init__(label=label)
+    def __init__(self, label, key=None):
+        super(UILabelDef, self).__init__(label=label, key=key)
 
     def __eq__(self, other):
         if not super(UILabelDef, self).__eq__(other):