diff --git a/components/style/properties/helpers.mako.rs b/components/style/properties/helpers.mako.rs
index 27d0cb907db..8dc422915d9 100644
--- a/components/style/properties/helpers.mako.rs
+++ b/components/style/properties/helpers.mako.rs
@@ -680,10 +680,9 @@
     % endif
 </%def>
 
-<%def name="shorthand(name, sub_properties, experimental=False, derive_serialize=False, **kwargs)">
+<%def name="shorthand(name, sub_properties, derive_serialize=False, **kwargs)">
 <%
-    shorthand = data.declare_shorthand(name, sub_properties.split(), experimental=experimental,
-                                       **kwargs)
+    shorthand = data.declare_shorthand(name, sub_properties.split(), **kwargs)
 %>
     % if shorthand:
     /// ${shorthand.spec}