1 files changed, 2 insertions, 1 deletions
diff --git a/libs/ardour/ardour/midi_region.h b/libs/ardour/ardour/midi_region.h
index daca7a243d..5196438926 100644
--- a/libs/ardour/ardour/midi_region.h
+++ b/libs/ardour/ardour/midi_region.h
@@ -53,9 +53,10 @@ class MidiFilter;
 class MidiModel;
 class MidiSource;
 class MidiStateTracker;
+
 template<typename T> class MidiRingBuffer;
 
-class MidiRegion : public Region
+class LIBARDOUR_API MidiRegion : public Region
 {
   public:
 	static void make_property_quarks ();