diff --git a/src/Http/HttpSession.cpp b/src/Http/HttpSession.cpp
index 2ad7eaef..7b2ff254 100644
--- a/src/Http/HttpSession.cpp
+++ b/src/Http/HttpSession.cpp
@@ -515,7 +515,7 @@ void HttpSession::sendResponse(int code,
     if(no_content_length){
         //http-flv直播是Keep-Alive类型
         bClose = false;
-    }else if(size >= SIZE_MAX || size < 0 ){
+    }else if((size_t) size >= SIZE_MAX || size < 0 ){
         //不固定长度的body，那么发送完body后应该关闭socket，以便浏览器做下载完毕的判断
         bClose = true;
     }
diff --git a/src/Rtsp/RtpReceiver.h b/src/Rtsp/RtpReceiver.h
index 00edcb95..0ee16c27 100644
--- a/src/Rtsp/RtpReceiver.h
+++ b/src/Rtsp/RtpReceiver.h
@@ -62,7 +62,7 @@ public:
      */
     void sortPacket(SEQ seq, T packet) {
         if (seq < _next_seq_out) {
-            if (_next_seq_out - seq < kMax) {
+            if (_next_seq_out < seq + kMax) {
                 //过滤seq回退包(回环包除外)
                 return;
             }