diff --git a/rtsp.c b/rtsp.c
index d9ff3eb2..ef79defb 100644
--- a/rtsp.c
+++ b/rtsp.c
@@ -28,6 +28,7 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <arpa/inet.h>
 #include <netdb.h>
 #include <sys/select.h>
 #include <signal.h>