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-rw-r--r--gtk2_ardour/route_ui.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/gtk2_ardour/route_ui.cc b/gtk2_ardour/route_ui.cc
index dcdf7fa778..2d353eb6b1 100644
--- a/gtk2_ardour/route_ui.cc
+++ b/gtk2_ardour/route_ui.cc
@@ -63,6 +63,7 @@ using namespace Gtkmm2ext;
using namespace ARDOUR;
using namespace ARDOUR_UI_UTILS;
using namespace PBD;
+using namespace std;
uint32_t RouteUI::_max_invert_buttons = 3;
PBD::Signal1<void, boost::shared_ptr<Route> > RouteUI::BusSendDisplayChanged;