diff --git a/zappa/core.py b/zappa/core.py
index 5ec113785..3c1687781 100644
--- a/zappa/core.py
+++ b/zappa/core.py
@@ -2336,7 +2336,7 @@ def _clear_policy(self, lambda_name):
                         StatementId=s['Sid']
                     )
                     if delete_response['ResponseMetadata']['HTTPStatusCode'] != 204:
-                        logger.error('Failed to delete an obsolete policy statement: {}'.format())
+                        logger.error('Failed to delete an obsolete policy statement: {}'.format(policy_response))
             else:
                 logger.debug('Failed to load Lambda function policy: {}'.format(policy_response))
         except ClientError as e: