diff --git a/calyx-py/calyx/py_ast.py b/calyx-py/calyx/py_ast.py
index 5b91d42c50..57a5197e0a 100644
--- a/calyx-py/calyx/py_ast.py
+++ b/calyx-py/calyx/py_ast.py
@@ -205,7 +205,7 @@ class Group(Structure):
 
     def doc(self) -> str:
         static_delay_attr = (
-            "" if self.static_delay is None else f'<"static"={self.static_delay}>'
+            "" if self.static_delay is None else f'<"promotable"={self.static_delay}>'
         )
         return block(
             f"group {self.id.doc()}{static_delay_attr}",