diff --git a/trunk/src/kernel/srs_kernel_rtc_rtcp.cpp b/trunk/src/kernel/srs_kernel_rtc_rtcp.cpp
index 4984a4c3a..226248c9c 100644
--- a/trunk/src/kernel/srs_kernel_rtc_rtcp.cpp
+++ b/trunk/src/kernel/srs_kernel_rtc_rtcp.cpp
@@ -501,6 +501,11 @@ srs_error_t SrsRtcpRR::encode(SrsBuffer *buffer)
     return err;
 }
 
+SrsRtcpTWCC::SrsRtcpTWCCChunk::SrsRtcpTWCCChunk()
+        : size(0), all_same(true), has_large_delta(false)
+{
+}
+
 SrsRtcpTWCC::SrsRtcpTWCC(uint32_t sender_ssrc) : sender_ssrc_(sender_ssrc), pkt_len(0)
 {
     header_.padding = 0;
diff --git a/trunk/src/kernel/srs_kernel_rtc_rtcp.hpp b/trunk/src/kernel/srs_kernel_rtc_rtcp.hpp
index fb00832d4..c65c656ce 100644
--- a/trunk/src/kernel/srs_kernel_rtc_rtcp.hpp
+++ b/trunk/src/kernel/srs_kernel_rtc_rtcp.hpp
@@ -252,6 +252,7 @@ private:
         uint16_t size;
         bool all_same;
         bool has_large_delta;
+        SrsRtcpTWCCChunk();
     };
 
     int pkt_len;