diff --git a/src/udev-seat.h b/src/udev-seat.h
index 6ac18bcf..462a6350 100644
--- a/src/udev-seat.h
+++ b/src/udev-seat.h
@@ -26,6 +26,7 @@
 #include "config.h"
 
 #include <libudev.h>
+#include "libinput-private.h"
 
 struct udev_seat {
 	struct libinput_seat base;