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-rw-r--r--libs/ardour/midi_region.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/libs/ardour/midi_region.cc b/libs/ardour/midi_region.cc
index 4e39436ae3..c0d63cc2ba 100644
--- a/libs/ardour/midi_region.cc
+++ b/libs/ardour/midi_region.cc
@@ -263,7 +263,7 @@ MidiRegion::state (bool full)
for (uint32_t n=0; n < _sources.size(); ++n) {
snprintf (buf2, sizeof(buf2), "source-%d", n);
- _sources[n]->id().print (buf);
+ _sources[n]->id().print (buf, sizeof(buf));
node.add_property (buf2, buf);
}