diff --git a/server/imserver/asynctaskmgr.cc b/server/imserver/asynctaskmgr.cc
index e2ee0d3..0670931 100644
--- a/server/imserver/asynctaskmgr.cc
+++ b/server/imserver/asynctaskmgr.cc
@@ -39,6 +39,10 @@ struct QueryUserStatusTask
 struct RecommandFriendTask
 {
 
+    void Done()
+    {
+
+    }
 };
 
 void AsyncTaskMgr::Init()