diff --git a/python/tvm/contrib/cutlass/build.py b/python/tvm/contrib/cutlass/build.py
index 1c0a30c62d91..80169f51640e 100644
--- a/python/tvm/contrib/cutlass/build.py
+++ b/python/tvm/contrib/cutlass/build.py
@@ -977,7 +977,7 @@ def handle_norm(self, f, op_type):
         return f.with_attrs(attrs)
 
     def visit_function_(self, f):
-        if "Composite" not in f.attrs:
+        if f.attrs is None or "Composite" not in f.attrs:
             body = super().visit_expr(f.body)
             return relax.Function(f.params, body, f.ret_struct_info, f.is_pure, f.attrs, f.span)