diff --git a/libs/ardour/ardour/source.h b/libs/ardour/ardour/source.h
index 6dc73cca5b..b4a430cced 100644
--- a/libs/ardour/ardour/source.h
+++ b/libs/ardour/ardour/source.h
@@ -162,7 +162,7 @@ public:
 	timepos_t           _natural_position;
 	bool                _have_natural_position;
 	bool                _analysed;
-	std::atomic<int> _use_count; /* atomic */
+	std::atomic<int>    _use_count;
 	uint32_t            _level; /* how deeply nested is this source w.r.t a disk file */
 	std::string         _ancestor_name;
 	std::string        _captured_for;
diff --git a/libs/ardour/source.cc b/libs/ardour/source.cc
index b4b787eef7..39d4e4acd9 100644
--- a/libs/ardour/source.cc
+++ b/libs/ardour/source.cc
@@ -441,7 +441,7 @@ Source::set_allow_remove_if_empty (bool yn)
 void
 Source::inc_use_count ()
 {
-    _use_count.fetch_add (1);
+	_use_count.fetch_add (1);
 }
 
 void