diff --git a/gio/gunixfdmessage.c b/gio/gunixfdmessage.c
index 6692e70b3..03c282541 100644
--- a/gio/gunixfdmessage.c
+++ b/gio/gunixfdmessage.c
@@ -31,6 +31,7 @@
 
 #include "config.h"
 
+#include <sys/types.h>
 #include <sys/socket.h>
 #include <unistd.h>
 #include <string.h>