diff --git a/plugins/mysql-apt/index.py b/plugins/mysql-apt/index.py
index 902d32bc1..280c5d5d2 100755
--- a/plugins/mysql-apt/index.py
+++ b/plugins/mysql-apt/index.py
@@ -2124,7 +2124,7 @@ def addMasterRepSlaveUser(version=''):
     # address = args['address'].strip()
     # dataAccess = args['dataAccess'].strip()
 
-    reg = "^[\w-]+$"
+    reg = r"^[\w-]+$"
     if not re.match(reg, username):
         return mw.returnJson(False, '用户名不能带有特殊符号!')
     checks = ['root', 'mysql', 'test', 'sys', 'performance_schema','information_schema']