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-rw-r--r--gtk2_ardour/meter_patterns.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/gtk2_ardour/meter_patterns.h b/gtk2_ardour/meter_patterns.h
index f505ba37c7..a0685bb50d 100644
--- a/gtk2_ardour/meter_patterns.h
+++ b/gtk2_ardour/meter_patterns.h
@@ -28,6 +28,11 @@
#include <sigc++/signal.h>
+namespace ARDOUR {
+ class Route;
+ class RouteGroup;
+}
+
namespace ArdourMeter {
extern sigc::signal<void> ResetAllPeakDisplays;