diff --git a/fang.c b/fang.c
index cda61bf..52f9659 100755
--- a/fang.c
+++ b/fang.c
@@ -45,6 +45,7 @@
 #include <sys/socket.h>
 #include <asm/types.h>
 #include <netinet/in.h>
+#include <pthread.h>

 #include <bluetooth/bluetooth.h>
 #include <bluetooth/hci.h>