diff --git a/include/wlr/types/wlr_cursor.h b/include/wlr/types/wlr_cursor.h
index 041f735cf..aaa18a437 100644
--- a/include/wlr/types/wlr_cursor.h
+++ b/include/wlr/types/wlr_cursor.h
@@ -49,30 +49,30 @@ struct wlr_cursor {
 	 * your responsibility.
 	 */
 	struct {
-		struct wl_signal motion;
-		struct wl_signal motion_absolute;
-		struct wl_signal button;
-		struct wl_signal axis;
+		struct wl_signal motion; // struct wlr_pointer_motion_event
+		struct wl_signal motion_absolute; // struct wlr_pointer_motion_absolute_event
+		struct wl_signal button; // struct wlr_pointer_button_event
+		struct wl_signal axis; // struct wlr_pointer_axis_event
 		struct wl_signal frame;
-		struct wl_signal swipe_begin;
-		struct wl_signal swipe_update;
-		struct wl_signal swipe_end;
-		struct wl_signal pinch_begin;
-		struct wl_signal pinch_update;
-		struct wl_signal pinch_end;
-		struct wl_signal hold_begin;
-		struct wl_signal hold_end;
+		struct wl_signal swipe_begin; // struct wlr_pointer_swipe_begin_event
+		struct wl_signal swipe_update; // struct wlr_pointer_swipe_update_event
+		struct wl_signal swipe_end; // struct wlr_pointer_swipe_end_event
+		struct wl_signal pinch_begin; // struct wlr_pointer_pinch_begin_event
+		struct wl_signal pinch_update; // struct wlr_pointer_pinch_update_event
+		struct wl_signal pinch_end; // struct wlr_pointer_pinch_end_event
+		struct wl_signal hold_begin; // struct wlr_pointer_hold_begin_event
+		struct wl_signal hold_end; // struct wlr_pointer_hold_end_event
 
-		struct wl_signal touch_up;
-		struct wl_signal touch_down;
-		struct wl_signal touch_motion;
-		struct wl_signal touch_cancel;
+		struct wl_signal touch_up; // struct wlr_touch_up_event
+		struct wl_signal touch_down; // struct wlr_touch_down_event
+		struct wl_signal touch_motion; // struct wlr_touch_motion_event
+		struct wl_signal touch_cancel; // struct wlr_touch_cancel_event
 		struct wl_signal touch_frame;
 
-		struct wl_signal tablet_tool_axis;
-		struct wl_signal tablet_tool_proximity;
-		struct wl_signal tablet_tool_tip;
-		struct wl_signal tablet_tool_button;
+		struct wl_signal tablet_tool_axis; // struct wlr_tablet_tool_axis_event
+		struct wl_signal tablet_tool_proximity; // struct wlr_tablet_tool_proximity_event
+		struct wl_signal tablet_tool_tip; // struct wlr_tablet_tool_tip_event
+		struct wl_signal tablet_tool_button; // struct wlr_tablet_tool_button_event
 	} events;
 
 	void *data;
diff --git a/types/wlr_cursor.c b/types/wlr_cursor.c
index f2269db0f..8d0d77475 100644
--- a/types/wlr_cursor.c
+++ b/types/wlr_cursor.c
@@ -956,7 +956,7 @@ static void handle_tablet_tool_axis(struct wl_listener *listener, void *data) {
 
 static void handle_tablet_tool_button(struct wl_listener *listener,
 		void *data) {
-	struct wlr_tablet_tool_button *event = data;
+	struct wlr_tablet_tool_button_event *event = data;
 	struct wlr_cursor_device *device;
 	device = wl_container_of(listener, device, tablet_tool_button);
 	wl_signal_emit_mutable(&device->cursor->events.tablet_tool_button, event);