diff --git a/service/low_energy_client.cc b/service/low_energy_client.cc
index cc127c3..cb8bcf1 100644
--- a/service/low_energy_client.cc
+++ b/service/low_energy_client.cc
@@ -188,8 +188,8 @@
 
   if (!bda) return;
 
-  const char* addr = BtAddrString(bda).c_str();
-  if (delegate_) delegate_->OnMtuChanged(this, status, addr, mtu);
+  std::string addr = BtAddrString(bda);
+  if (delegate_) delegate_->OnMtuChanged(this, status, addr.c_str(), mtu);
 }
 
 // LowEnergyClientFactory implementation
diff --git a/stack/btm/btm_acl.cc b/stack/btm/btm_acl.cc
index dcb2fb4..31d38e5 100644
--- a/stack/btm/btm_acl.cc
+++ b/stack/btm/btm_acl.cc
@@ -50,6 +50,7 @@
 #include "device/include/interop.h"
 #include "hcidefs.h"
 #include "hcimsgs.h"
+#include "log/log.h"
 #include "l2c_int.h"
 #include "osi/include/log.h"
 #include "osi/include/osi.h"