diff --git a/features/patroni_api.feature b/features/patroni_api.feature
index 57810173..bf1e2fa9 100644
--- a/features/patroni_api.feature
+++ b/features/patroni_api.feature
@@ -86,7 +86,7 @@ Scenario: check the scheduled restart
 	Then I receive a response code 202
 		And I sleep for 10 seconds
 		And Response on GET http://127.0.0.1:8008/patroni contains pending_restart after 10 seconds
-	Given I issue a scheduled restart at http://127.0.0.1:8008 in 1 seconds with {"with_pending_restart_flag": "True"}
+	Given I issue a scheduled restart at http://127.0.0.1:8008 in 1 seconds with {"restart_pending": "True"}
 	Then I receive a response code 202
 		And Response on GET http://127.0.0.1:8008/patroni does not contain pending_restart after 10 seconds
 
diff --git a/patroni/api.py b/patroni/api.py
index d89ec409..756031f4 100644
--- a/patroni/api.py
+++ b/patroni/api.py
@@ -216,7 +216,7 @@ class RestApiHandler(BaseHTTPRequestHandler):
                     status_code = 400
                     data = "PostgreSQL version should be in the first.major.minor format"
                     break
-            elif k != 'with_pending_restart_flag':
+            elif k != 'restart_pending':
                 status_code = 400
                 data = "Unknown filter for the scheduled restart: {0}".format(k)
                 break
diff --git a/patroni/ha.py b/patroni/ha.py
index f0803708..64105067 100644
--- a/patroni/ha.py
+++ b/patroni/ha.py
@@ -464,7 +464,7 @@ class Ha(object):
         if (restart_data and isinstance(restart_data, dict) and
             not self.restart_matches(restart_data.get('role'),
                                      restart_data.get('postgres_version'),
-                                     ('with_pending_restart_flag' in restart_data))):
+                                     ('restart_pending' in restart_data))):
             return (False, "restart conditions are not satisfied")
 
         with self._async_executor: