diff --git a/server/socketio.go b/server/socketio.go
index 1238edbf..d17154a0 100644
--- a/server/socketio.go
+++ b/server/socketio.go
@@ -184,7 +184,7 @@ func (s *SocketIoServer) onMessage(c *gosocketio.Channel, req map[string]json.Ra
 		s.metrics.SocketIORequests.With(common.Labels{"method": method, "status": "success"}).Inc()
 		return rv
 	}
-	glog.Error(c.Id(), " onMessage ", method, ": ", errors.ErrorStack(err))
+	glog.Error(c.Id(), " onMessage ", method, ": ", errors.ErrorStack(err), ", data ", string(params))
 	s.metrics.SocketIORequests.With(common.Labels{"method": method, "status": "failure"}).Inc()
 	e := resultError{}
 	e.Error.Message = err.Error()
diff --git a/server/websocket.go b/server/websocket.go
index 48111e1f..037ad022 100644
--- a/server/websocket.go
+++ b/server/websocket.go
@@ -340,7 +340,7 @@ func (s *WebsocketServer) onRequest(c *websocketChannel, req *websocketReq) {
 		glog.V(1).Info("Client ", c.id, " onRequest ", req.Method, " success")
 		s.metrics.WebsocketRequests.With(common.Labels{"method": req.Method, "status": "success"}).Inc()
 	} else {
-		glog.Error("Client ", c.id, " onMessage ", req.Method, ": ", errors.ErrorStack(err))
+		glog.Error("Client ", c.id, " onMessage ", req.Method, ": ", errors.ErrorStack(err), ", data ", string(req.Params))
 		s.metrics.WebsocketRequests.With(common.Labels{"method": req.Method, "status": "failure"}).Inc()
 		e := resultError{}
 		e.Error.Message = err.Error()