diff --git a/include/input/Input.h b/include/input/Input.h
index a8684bd..127046d 100644
--- a/include/input/Input.h
+++ b/include/input/Input.h
@@ -294,6 +294,8 @@
     NONE = AINPUT_KEYBOARD_TYPE_NONE,
     NON_ALPHABETIC = AINPUT_KEYBOARD_TYPE_NON_ALPHABETIC,
     ALPHABETIC = AINPUT_KEYBOARD_TYPE_ALPHABETIC,
+    ftl_first = NONE,
+    ftl_last = ALPHABETIC,
 };
 
 bool isStylusToolType(ToolType toolType);