diff --git a/include/wlr/types/wlr_output_layout.h b/include/wlr/types/wlr_output_layout.h
index ccb2cd61..a3e47e8d 100644
--- a/include/wlr/types/wlr_output_layout.h
+++ b/include/wlr/types/wlr_output_layout.h
@@ -105,9 +105,9 @@ struct wlr_output *wlr_output_layout_get_center_output(
 		struct wlr_output_layout *layout);
 
 enum wlr_direction {
-	WLR_DIRECTION_UP = 0,
-	WLR_DIRECTION_DOWN = 1,
-	WLR_DIRECTION_LEFT = 2,
+	WLR_DIRECTION_UP = 1,
+	WLR_DIRECTION_DOWN = 2,
+	WLR_DIRECTION_LEFT = 3,
 	WLR_DIRECTION_RIGHT = 4,
 };