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-rw-r--r--gtk2_ardour/step_entry.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/gtk2_ardour/step_entry.cc b/gtk2_ardour/step_entry.cc
index 8a04f4b03b..2039f50a0a 100644
--- a/gtk2_ardour/step_entry.cc
+++ b/gtk2_ardour/step_entry.cc
@@ -42,6 +42,7 @@ using namespace Glib;
using namespace Gtkmm2ext;
using namespace PBD;
using namespace ARDOUR;
+using namespace ARDOUR_UI_UTILS;
static void
_note_off_event_handler (GtkWidget* /*widget*/, int note, gpointer arg)