1 files changed, 1 insertions, 1 deletions
diff --git a/libs/ardour/ardour/midi_port.h b/libs/ardour/ardour/midi_port.h
index 00617d90ec..cc9fee1b15 100644
--- a/libs/ardour/ardour/midi_port.h
+++ b/libs/ardour/ardour/midi_port.h
@@ -31,7 +31,7 @@ namespace ARDOUR {
 
 class MidiEngine;
 
-class MidiPort : public Port {
+class LIBARDOUR_API MidiPort : public Port {
    public:
 	~MidiPort();