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-rw-r--r--gtk2_ardour/curvetest.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/gtk2_ardour/curvetest.cc b/gtk2_ardour/curvetest.cc
index 613835aa4c..3c9836a5e6 100644
--- a/gtk2_ardour/curvetest.cc
+++ b/gtk2_ardour/curvetest.cc
@@ -7,6 +7,7 @@
using namespace std;
using namespace ARDOUR;
+using namespace PBD;
int
curvetest (string filename)