diff --git a/libs/ardour/ardour/session_object.h b/libs/ardour/ardour/session_object.h
index 07c33c9701..3a796c75b5 100644
--- a/libs/ardour/ardour/session_object.h
+++ b/libs/ardour/ardour/session_object.h
@@ -31,7 +31,6 @@ class Session;
  *
  * This is a few common things factored out of IO which weren't IO specific
  * (to fix the problem with e.g. PluginInsert being an IO which it shouldn't be).
- * collection of input and output ports with connections.
  */
 class SessionObject : public PBD::StatefulDestructible
 {
diff --git a/libs/ardour/midi_source.cc b/libs/ardour/midi_source.cc
index b14b85b802..81bea1f64d 100644
--- a/libs/ardour/midi_source.cc
+++ b/libs/ardour/midi_source.cc
@@ -131,9 +131,9 @@ MidiSource::invalidate ()
 
 nframes_t
 MidiSource::midi_read (Evoral::EventSink<nframes_t>& dst, sframes_t source_start,
-		       sframes_t start, nframes_t cnt,
-		       sframes_t stamp_offset, sframes_t negative_stamp_offset,
-		       MidiStateTracker* tracker) const
+                       sframes_t start, nframes_t cnt,
+                       sframes_t stamp_offset, sframes_t negative_stamp_offset,
+                       MidiStateTracker* tracker) const
 {
 	Glib::Mutex::Lock lm (_lock);