diff --git a/trunk/src/app/srs_app_rtc_queue.cpp b/trunk/src/app/srs_app_rtc_queue.cpp
index 15999d510..ff820ab8b 100644
--- a/trunk/src/app/srs_app_rtc_queue.cpp
+++ b/trunk/src/app/srs_app_rtc_queue.cpp
@@ -248,7 +248,7 @@ void SrsRtpNackForReceiver::get_nack_seqs(vector<uint16_t>& seqs)
         int alive_time = now - nack_info.generate_time_;
         if (alive_time > opts_.max_alive_time || nack_info.req_nack_count_ > opts_.max_count) {
             rtp_->notify_drop_seq(seq);
-            iter = queue_.erase(iter);
+            queue_.erase(iter++);
             continue;
         }
 
diff --git a/trunk/src/kernel/srs_kernel_rtc_rtp.hpp b/trunk/src/kernel/srs_kernel_rtc_rtp.hpp
index 8af2f058e..ac04dc007 100644
--- a/trunk/src/kernel/srs_kernel_rtc_rtp.hpp
+++ b/trunk/src/kernel/srs_kernel_rtc_rtp.hpp
@@ -147,7 +147,7 @@ public:
 private:
     srs_error_t parse_extension(SrsBuffer* buf, const SrsRtpHeaderExtensionMap* extension_map);
 public:
-    virtual srs_error_t decode(SrsBuffer* buf, const SrsRtpHeaderExtensionMap* extmap = nullptr);
+    virtual srs_error_t decode(SrsBuffer* buf, const SrsRtpHeaderExtensionMap* extmap = NULL);
     virtual srs_error_t encode(SrsBuffer* buf);
     virtual int nb_bytes();
 public:
@@ -224,7 +224,7 @@ public:
     virtual int nb_bytes();
     virtual srs_error_t encode(SrsBuffer* buf);
     // TODO: FIXME: Should follow interface ISrsEncoder.
-    virtual srs_error_t decode(SrsBuffer* buf, const SrsRtpHeaderExtensionMap* extmap = nullptr);
+    virtual srs_error_t decode(SrsBuffer* buf, const SrsRtpHeaderExtensionMap* extmap = NULL);
 };
 
 // Single payload data.