diff --git a/include/wlr/types/wlr_ext_data_control_v1.h b/include/wlr/types/wlr_ext_data_control_v1.h
index e49dfb3f5..7cdc7e95b 100644
--- a/include/wlr/types/wlr_ext_data_control_v1.h
+++ b/include/wlr/types/wlr_ext_data_control_v1.h
@@ -21,7 +21,9 @@ struct wlr_ext_data_control_manager_v1 {
 		struct wl_signal new_device; // wlr_ext_data_control_device_v1
 	} events;
 
-	struct wl_listener display_destroy;
+	struct {
+		struct wl_listener display_destroy;
+	} WLR_PRIVATE;
 };
 
 struct wlr_ext_data_control_device_v1 {
@@ -33,9 +35,11 @@ struct wlr_ext_data_control_device_v1 {
 	struct wl_resource *selection_offer_resource; // current selection offer
 	struct wl_resource *primary_selection_offer_resource; // current primary selection offer
 
-	struct wl_listener seat_destroy;
-	struct wl_listener seat_set_selection;
-	struct wl_listener seat_set_primary_selection;
+	struct {
+		struct wl_listener seat_destroy;
+		struct wl_listener seat_set_selection;
+		struct wl_listener seat_set_primary_selection;
+	} WLR_PRIVATE;
 };
 
 struct wlr_ext_data_control_manager_v1 *wlr_ext_data_control_manager_v1_create(