diff --git a/trunk/src/app/srs_app_rtc_conn.cpp b/trunk/src/app/srs_app_rtc_conn.cpp
index 401ecc01f..ffab0f6e5 100644
--- a/trunk/src/app/srs_app_rtc_conn.cpp
+++ b/trunk/src/app/srs_app_rtc_conn.cpp
@@ -1212,8 +1212,6 @@ srs_error_t SrsRtcSenderThread::packet_nalus(SrsSharedPtrMessage* msg, SrsRtcPac
 
         packet->payload = raw;
     } else {
-        SrsAutoFree(SrsRtpRawNALUs, raw);
-
         // Package NALUs in FU-A RTP packets.
         int fu_payload_size = kRtpMaxPayloadSize;
 
diff --git a/trunk/src/kernel/srs_kernel_rtp.cpp b/trunk/src/kernel/srs_kernel_rtp.cpp
index 0215cb1a6..a61b360a3 100644
--- a/trunk/src/kernel/srs_kernel_rtp.cpp
+++ b/trunk/src/kernel/srs_kernel_rtp.cpp
@@ -157,19 +157,19 @@ SrsRtpPacket2::SrsRtpPacket2()
     cache_raw = new SrsRtpRawPayload();
     cache_fua = new SrsRtpFUAPayload2();
     cache_payload = 0;
-    using_cache = false;
 }
 
 SrsRtpPacket2::~SrsRtpPacket2()
 {
     // We may use the cache as payload.
-    if (using_cache) {
+    if (payload == cache_raw || payload == cache_fua) {
         payload = NULL;
     }
 
     srs_freep(payload);
     srs_freep(extra_payload);
     srs_freep(cache_raw);
+    srs_freep(cache_fua);
 }
 
 void SrsRtpPacket2::set_padding(int size)
@@ -198,25 +198,20 @@ void SrsRtpPacket2::reset()
     srs_freep(extra_payload);
 
     // We may use the cache as payload.
-    if (using_cache) {
+    if (payload == cache_raw || payload == cache_fua) {
         payload = NULL;
-    } else {
-        srs_freep(payload);
     }
-
-    using_cache = false;
+    srs_freep(payload);
 }
 
 SrsRtpRawPayload* SrsRtpPacket2::reuse_raw()
 {
-    using_cache = true;
     payload = cache_raw;
     return cache_raw;
 }
 
 SrsRtpFUAPayload2* SrsRtpPacket2::reuse_fua()
 {
-    using_cache = true;
     payload = cache_fua;
     return cache_fua;
 }
diff --git a/trunk/src/kernel/srs_kernel_rtp.hpp b/trunk/src/kernel/srs_kernel_rtp.hpp
index eb811ee29..31b59ec85 100644
--- a/trunk/src/kernel/srs_kernel_rtp.hpp
+++ b/trunk/src/kernel/srs_kernel_rtp.hpp
@@ -92,7 +92,6 @@ public:
 private:
     SrsRtpRawPayload* cache_raw;
     SrsRtpFUAPayload2* cache_fua;
-    bool using_cache;
     int cache_payload;
 public:
     SrsRtpPacket2();