diff --git a/libs/ardour/midi_port.cc b/libs/ardour/midi_port.cc
index cc72eabba4..51d364a3d9 100644
--- a/libs/ardour/midi_port.cc
+++ b/libs/ardour/midi_port.cc
@@ -173,7 +173,8 @@ MidiPort::flush_buffers (pframes_t nframes)
 				}
 			} else {
 				cerr << "drop flushed event on the floor, time " << ev
-				     << " to early for " << _global_port_buffer_offset + _port_buffer_offset << endl;
+				     << " to early for " << _global_port_buffer_offset 
+				     << " + " << _port_buffer_offset << endl;
 			}
 		}
 	}