diff --git a/gtk2_ardour/automation_time_axis.cc b/gtk2_ardour/automation_time_axis.cc
index 8e3121bf23..508c42faa5 100644
--- a/gtk2_ardour/automation_time_axis.cc
+++ b/gtk2_ardour/automation_time_axis.cc
@@ -227,7 +227,7 @@ AutomationTimeAxisView::AutomationTimeAxisView (
 	name_label.set_alignment (Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER);
 	name_label.set_name (X_("TrackParameterName"));
 	name_label.set_ellipsize (Pango::ELLIPSIZE_END);
-	set_size_request_to_display_given_text (name_label, X_("mmmm"), 0, 0); /* "4em" width, will expand as possible */
+	name_label.set_size_request (floor (50.0 * UIConfiguration::instance().get_ui_scale()), -1);
 
 	/* add the buttons */
 	controls_table.set_border_width (1);