diff --git a/paddle_hub/hub_server.py b/paddle_hub/hub_server.py
index 1d8293cf25a8958262d81c29928ea85909d90953..22f5e4c97da91857521d47c2907a11a71b253d50 100644
--- a/paddle_hub/hub_server.py
+++ b/paddle_hub/hub_server.py
@@ -51,7 +51,7 @@ class HubServer:
         self.module_list_file = csv_reader.read(self.module_list_file_path())
 
         # if file do not contain necessary data, remove it
-        if not "version" in self.module_list_file or not "module_name" in self.module_list_file:
+        if "version" not in self.module_list_file or "module_name" not in self.module_list_file:
             self.module_list_file = {}
             os.remove(self.module_list_file_path())
             return False