diff --git a/include/wlr/types/wlr_data_device.h b/include/wlr/types/wlr_data_device.h
index ba067a62..85d661a7 100644
--- a/include/wlr/types/wlr_data_device.h
+++ b/include/wlr/types/wlr_data_device.h
@@ -12,15 +12,6 @@
 #include <wayland-server-core.h>
 #include <wlr/types/wlr_seat.h>
 
-extern const struct wlr_pointer_grab_interface
-	wlr_data_device_pointer_drag_interface;
-
-extern const struct wlr_keyboard_grab_interface
-	wlr_data_device_keyboard_drag_interface;
-
-extern const struct wlr_touch_grab_interface
-	wlr_data_device_touch_drag_interface;
-
 struct wlr_data_device_manager {
 	struct wl_global *global;
 	struct wl_list data_sources;