diff --git a/gtk2_ardour/ardour_ui.cc b/gtk2_ardour/ardour_ui.cc
index 1850648218..04470faba6 100644
--- a/gtk2_ardour/ardour_ui.cc
+++ b/gtk2_ardour/ardour_ui.cc
@@ -2261,7 +2261,7 @@ ARDOUR_UI::update_clocks ()
 {
 	if (!_session) return;
 
-	if (!editor && !editor->dragging_playhead()) {
+	if (editor && !editor->dragging_playhead()) {
 		Clock (_session->audible_frame(), false, editor->get_preferred_edit_position()); /* EMIT_SIGNAL */
 	}
 }