diff --git a/src/xcb_util.c b/src/xcb_util.c
index f5c7cec..3bcaefd 100644
--- a/src/xcb_util.c
+++ b/src/xcb_util.c
@@ -29,6 +29,7 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/un.h>
+#include <netinet/in.h>
 #ifdef DNETCONN
 #include <netdnet/dnetdb.h>
 #include <netdnet/dn.h>