diff --git a/apps/hrm/services.py b/apps/hrm/services.py
index b291ab20..072df66d 100755
--- a/apps/hrm/services.py
+++ b/apps/hrm/services.py
@@ -22,10 +22,10 @@ myLogger = logging.getLogger('log')
 
 @singleton
 class FaceDb():
-    def __init__(self, face_df) -> None:
+    def __init__(self, face_df=None) -> None:
         self.face_df = face_df
 
-facedb = FaceDb(None)
+facedb = FaceDb()
 
 class HrmService: