diff --git a/src/rtp/rtp_packet.cpp b/src/rtp/rtp_packet.cpp
index a85afa2..165316d 100644
--- a/src/rtp/rtp_packet.cpp
+++ b/src/rtp/rtp_packet.cpp
@@ -62,7 +62,7 @@ RtpPacket::RtpPacket(RtpPacket &&rtp_packet)
 RtpPacket &RtpPacket::operator=(const RtpPacket &rtp_packet) {
   if (&rtp_packet != this) {
     if (buffer_) {
-      delete buffer_;
+      delete[] buffer_;
       buffer_ = nullptr;
     }
     buffer_ = new uint8_t[rtp_packet.size_];
@@ -88,13 +88,13 @@ RtpPacket &RtpPacket::operator=(RtpPacket &&rtp_packet) {
 
 RtpPacket::~RtpPacket() {
   if (buffer_) {
-    delete buffer_;
+    delete[] buffer_;
     buffer_ = nullptr;
   }
   size_ = 0;
 
   if (extension_data_) {
-    delete extension_data_;
+    delete[] extension_data_;
     extension_data_ = nullptr;
   }
   extension_len_ = 0;
diff --git a/src/transmission/ice_transmission.cpp b/src/transmission/ice_transmission.cpp
index 7074bf5..5341712 100644
--- a/src/transmission/ice_transmission.cpp
+++ b/src/transmission/ice_transmission.cpp
@@ -197,7 +197,11 @@ int IceTransmission::JoinTransmission() {
 }
 
 int IceTransmission::GatherCandidates() {
-  ice_agent_->GatherCandidates();
+  int ret = ice_agent_->GatherCandidates();
+  while (ret) {
+    LOG_ERROR("Gather candidates failed, retry");
+    ret = ice_agent_->GatherCandidates();
+  }
   LOG_INFO("[{}] Gather candidates", user_id_);
   return 0;
 }