diff --git a/gdk/gdktypes.h b/gdk/gdktypes.h
index 6ff71a7b3f..4c355aa5eb 100644
--- a/gdk/gdktypes.h
+++ b/gdk/gdktypes.h
@@ -440,6 +440,7 @@ typedef enum
   GDK_SCROLL_MASK               = 1 << 21,
   GDK_TOUCH_MASK                = 1 << 22,
   GDK_SMOOTH_SCROLL_MASK        = 1 << 23,
+  GDK_TOUCHPAD_GESTURE_MASK     = 1 << 24,
   GDK_ALL_EVENTS_MASK           = 0xFFFFFE
 } GdkEventMask;
 
diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index 18ba8ac8af..752cb7f822 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -7565,7 +7565,9 @@ static const guint type_masks[] = {
   GDK_TOUCH_MASK, /* GDK_TOUCH_BEGIN = 37 */
   GDK_TOUCH_MASK, /* GDK_TOUCH_UPDATE = 38 */
   GDK_TOUCH_MASK, /* GDK_TOUCH_END = 39 */
-  GDK_TOUCH_MASK /* GDK_TOUCH_CANCEL = 40 */
+  GDK_TOUCH_MASK, /* GDK_TOUCH_CANCEL = 40 */
+  GDK_TOUCHPAD_GESTURE_MASK, /* GDK_TOUCHPAD_SWIPE = 41 */
+  GDK_TOUCHPAD_GESTURE_MASK, /* GDK_TOUCHPAD_PINCH = 42 */
 };
 G_STATIC_ASSERT (G_N_ELEMENTS (type_masks) == GDK_EVENT_LAST);