diff --git a/src/Rtsp/RtpMultiCaster.cpp b/src/Rtsp/RtpMultiCaster.cpp
index cf3a12b0..03f84a66 100644
--- a/src/Rtsp/RtpMultiCaster.cpp
+++ b/src/Rtsp/RtpMultiCaster.cpp
@@ -114,9 +114,8 @@ RtpMultiCaster::RtpMultiCaster(const EventPoller::Ptr &poller,const string &strL
         int i = 0;
         int size = pkt->size();
         pkt->for_each([&](const RtpPacket::Ptr &rtp) {
-            int i = (int) (rtp->type);
-            auto &pSock = _apUdpSock[i];
-            auto &peerAddr = _aPeerUdpAddr[i];
+            auto &pSock = _apUdpSock[rtp->type];
+            auto &peerAddr = _aPeerUdpAddr[rtp->type];
             BufferRtp::Ptr buffer(new BufferRtp(rtp, 4));
             pSock->send(buffer, nullptr, 0, ++i == size);
         });