diff --git a/drivers/bluetooth/hci/userchan.c b/drivers/bluetooth/hci/userchan.c
index 254ce1866d1..22a286c4016 100644
--- a/drivers/bluetooth/hci/userchan.c
+++ b/drivers/bluetooth/hci/userchan.c
@@ -15,10 +15,12 @@
 
 #include <errno.h>
 #include <stddef.h>
+#include <stdlib.h>
 #include <poll.h>
 #include <errno.h>
 #include <sys/socket.h>
 #include <string.h>
+#include <unistd.h>
 
 #include "soc.h"
 #include "cmdline.h" /* native_posix command line options header */