diff --git a/libs/ardour/engine_slave.cc b/libs/ardour/engine_slave.cc
index d18e39841c..374564e7c6 100644
--- a/libs/ardour/engine_slave.cc
+++ b/libs/ardour/engine_slave.cc
@@ -123,7 +123,7 @@ Engine_TransportMaster::position_string () const
 std::string
 Engine_TransportMaster::delta_string () const
 {
-	return string ("0");
+	return string ("\u0394 0");
 }
 
 bool