diff --git a/routers/web/admin/auths.go b/routers/web/admin/auths.go
index f53a1649f0..b79b317555 100644
--- a/routers/web/admin/auths.go
+++ b/routers/web/admin/auths.go
@@ -39,7 +39,7 @@ const (
 )
 
 var (
-	separatorAntiPattern = regexp.MustCompile(`[^\w-\.@]`)
+	separatorAntiPattern = regexp.MustCompile(`[^\w-\.]`)
 	langCodePattern      = regexp.MustCompile(`^[a-z]{2}-[A-Z]{2}$`)
 )