diff --git a/hci/src/hci_h4.c b/hci/src/hci_h4.c
index ba6e2a2..b41ad53 100644
--- a/hci/src/hci_h4.c
+++ b/hci/src/hci_h4.c
@@ -28,6 +28,7 @@
 
 #include <utils/Log.h>
 #include <stdlib.h>
+#include <string.h>
 #include <fcntl.h>
 
 #include "bt_hci_bdroid.h"
diff --git a/hci/src/lpm.c b/hci/src/lpm.c
index 71023ba..28e0cfa 100644
--- a/hci/src/lpm.c
+++ b/hci/src/lpm.c
@@ -28,6 +28,7 @@
 
 #include <utils/Log.h>
 #include <signal.h>
+#include <string.h>
 #include <time.h>
 #include "bt_hci_bdroid.h"
 #include "bt_vendor_lib.h"
diff --git a/hci/src/userial.c b/hci/src/userial.c
index e3f3557..7d892f9 100644
--- a/hci/src/userial.c
+++ b/hci/src/userial.c
@@ -29,6 +29,7 @@
 #include <assert.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <memory.h>
 #include <pthread.h>
 #include <stdio.h>
 #include <sys/eventfd.h>