diff --git a/openstackclient/common/utils.py b/openstackclient/common/utils.py
index 0a1f8e0e79..91b1e05aa1 100644
--- a/openstackclient/common/utils.py
+++ b/openstackclient/common/utils.py
@@ -145,7 +145,6 @@ def format_dict(data):
     """Return a formatted string of key value pairs
 
     :param data: a dict
-    :param format: optional formatting hints
     :rtype: a string formatted to key='value'
     """