diff --git a/tests/test_utils_argfwd.py b/tests/test_utils_argfwd.py
index 1824b3f7d..b27e554f7 100644
--- a/tests/test_utils_argfwd.py
+++ b/tests/test_utils_argfwd.py
@@ -103,7 +103,7 @@ def wrap_ignore_all(x, y):
     return func_target(1, 2, 3, 4)  
 
 @pytest.mark.parametrize("func, expected_sig", [
-    (wrap_all, '(a, b, d=30,  c=10)'),
+    (wrap_all, '(a, b, d=30, c=10)'),
     (wrap_skip, '(a, b, c=10, d=20)'),
     (wrap_ignore_all, '(x, y, c=10, d=20)'),
 ])