diff --git a/src/libinput-private.h b/src/libinput-private.h
index 85267761..49232f9e 100644
--- a/src/libinput-private.h
+++ b/src/libinput-private.h
@@ -30,6 +30,8 @@
 #include "libinput.h"
 #include "libinput-util.h"
 
+#define LIBINPUT_TABLET_AXIS_CNT LIBINPUT_TABLET_AXIS_TILT_Y + 1
+
 struct libinput_source;
 
 struct libinput_interface_backend {
diff --git a/src/libinput.h b/src/libinput.h
index 78bb9eff..d59435da 100644
--- a/src/libinput.h
+++ b/src/libinput.h
@@ -277,7 +277,6 @@ enum libinput_tablet_axis {
 	LIBINPUT_TABLET_AXIS_PRESSURE = 3,
 	LIBINPUT_TABLET_AXIS_TILT_X = 4,
 	LIBINPUT_TABLET_AXIS_TILT_Y = 5,
-	LIBINPUT_TABLET_AXIS_CNT = LIBINPUT_TABLET_AXIS_TILT_Y + 1
 };
 
 /**