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-rw-r--r--libs/ardour/midi_track.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/libs/ardour/midi_track.cc b/libs/ardour/midi_track.cc
index 469d994768..dcea38521b 100644
--- a/libs/ardour/midi_track.cc
+++ b/libs/ardour/midi_track.cc
@@ -690,7 +690,7 @@ MidiTrack::map_input_active (bool yn)
PortSet& ports (_input->ports());
for (PortSet::iterator p = ports.begin(DataType::MIDI); p != ports.end(DataType::MIDI); ++p) {
- MidiPort* mp = dynamic_cast<MidiPort*> (&*p);
+ boost::shared_ptr<MidiPort> mp = boost::dynamic_pointer_cast<MidiPort> (*p);
if (yn != mp->input_active()) {
mp->set_input_active (yn);
}