diff --git a/include/android/input.h b/include/android/input.h
index efbbb8558..7a1176128 100644
--- a/include/android/input.h
+++ b/include/android/input.h
@@ -457,6 +457,7 @@ enum {
     AINPUT_SOURCE_TRACKBALL = 0x00010000 | AINPUT_SOURCE_CLASS_NAVIGATION,
     AINPUT_SOURCE_TOUCHPAD = 0x00100000 | AINPUT_SOURCE_CLASS_POSITION,
     AINPUT_SOURCE_TOUCH_NAVIGATION = 0x00200000 | AINPUT_SOURCE_CLASS_NONE,
+    AINPUT_SOURCE_GESTURE_SENSOR = 0x00400000 | AINPUT_SOURCE_CLASS_NONE,
     AINPUT_SOURCE_JOYSTICK = 0x01000000 | AINPUT_SOURCE_CLASS_JOYSTICK,
 
     AINPUT_SOURCE_ANY = 0xffffff00,