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-rw-r--r--gtk2_ardour/time_axis_view.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/gtk2_ardour/time_axis_view.cc b/gtk2_ardour/time_axis_view.cc
index 1b6c1f390c..b5ab5baa10 100644
--- a/gtk2_ardour/time_axis_view.cc
+++ b/gtk2_ardour/time_axis_view.cc
@@ -55,6 +55,7 @@ using namespace Gtk;
using namespace Gdk;
using namespace sigc;
using namespace ARDOUR;
+using namespace PBD;
using namespace Editing;
using namespace ArdourCanvas;