diff --git a/base/web/route.go b/base/web/route.go
index 35a9100f..4f8dc829 100644
--- a/base/web/route.go
+++ b/base/web/route.go
@@ -34,7 +34,7 @@ func init() {
 					}
 					return
 				}
-				if arg[0] == "" {
+				if len(arg) > 0 && arg[0] == "" {
 					m.Cmdy(arg[1:])
 					return
 				}