diff --git a/bluetooth/1.0/default/bluetooth_hci.h b/bluetooth/1.0/default/bluetooth_hci.h
index 6912405..e2797b1 100644
--- a/bluetooth/1.0/default/bluetooth_hci.h
+++ b/bluetooth/1.0/default/bluetooth_hci.h
@@ -21,6 +21,8 @@
 
 #include <hidl/MQDescriptor.h>
 
+#include <functional>
+
 namespace android {
 namespace hardware {
 namespace bluetooth {
diff --git a/bluetooth/1.0/default/hci_protocol.cc b/bluetooth/1.0/default/hci_protocol.cc
index a208da1..5d6f1d1 100644
--- a/bluetooth/1.0/default/hci_protocol.cc
+++ b/bluetooth/1.0/default/hci_protocol.cc
@@ -18,6 +18,7 @@
 
 #define LOG_TAG "android.hardware.bluetooth-hci-hci_protocol"
 #include <assert.h>
+#include <errno.h>
 #include <fcntl.h>
 #include <log/log.h>