diff --git a/gtk2_ardour/ui_config_vars.h b/gtk2_ardour/ui_config_vars.h
index 1392baf7f8..7eec8a83c4 100644
--- a/gtk2_ardour/ui_config_vars.h
+++ b/gtk2_ardour/ui_config_vars.h
@@ -123,3 +123,4 @@ UI_CONFIG_VARIABLE (bool, show_grids_ruler, "show-grids-ruler", true)
 UI_CONFIG_VARIABLE (bool, rulers_follow_grid, "rulers-follow-grid", false)
 UI_CONFIG_VARIABLE (bool, grid_follows_internal, "grid-follows-internal", false)  //this feature is deprecated, default it FALSE for now; remove it in v6
 UI_CONFIG_VARIABLE (bool, show_region_name, "show-region-name", true)
+UI_CONFIG_VARIABLE (int, time_axis_name_ellipsize_mode, "time-axis-name-ellipsize-mode", 0)