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-rw-r--r--gtk2_ardour/crossfade_view.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/gtk2_ardour/crossfade_view.cc b/gtk2_ardour/crossfade_view.cc
index 4545837dfa..350698ec48 100644
--- a/gtk2_ardour/crossfade_view.cc
+++ b/gtk2_ardour/crossfade_view.cc
@@ -35,6 +35,7 @@
using namespace sigc;
using namespace ARDOUR;
+using namespace PBD;
using namespace Editing;
using namespace Gnome;
using namespace Canvas;