diff --git a/weex_core/Source/core/network/ios/default_request_handler.mm b/weex_core/Source/core/network/ios/default_request_handler.mm
index 02e42b3fb4..e072d12ede 100644
--- a/weex_core/Source/core/network/ios/default_request_handler.mm
+++ b/weex_core/Source/core/network/ios/default_request_handler.mm
@@ -33,7 +33,7 @@
         NSURL* nsURL = [NSURL URLWithString:NSSTRING(url)];
         [[WXSDKManager bridgeMgr] DownloadJS:@(instance_id) url:nsURL completion:^(NSString *script) {
             WXPerformBlockOnBridgeThread(^{
-                callback([script UTF8String] ? : "");
+                callback([script UTF8String] ? : "", "");
             });
         }];
     }