diff --git a/scripts/setup-seafile-mysql.py b/scripts/setup-seafile-mysql.py
index 197e0fc718..4c14043b7d 100644
--- a/scripts/setup-seafile-mysql.py
+++ b/scripts/setup-seafile-mysql.py
@@ -1566,7 +1566,8 @@ def main():
 
     report_success()
 
-    db_config.root_conn.close()
+    if db_config.root_conn:
+        db_config.root_conn.close()
 
 def report_success():
     message = '''\