1 files changed, 1 insertions, 1 deletions
diff --git a/libs/ardour/ardour/port_manager.h b/libs/ardour/ardour/port_manager.h
index ba15142d83..b36e98fe64 100644
--- a/libs/ardour/ardour/port_manager.h
+++ b/libs/ardour/ardour/port_manager.h
@@ -40,7 +40,7 @@ namespace ARDOUR {
 class PortEngine;
 class AudioBackend;
 
-class PortManager 
+class LIBARDOUR_API PortManager 
 {
   public:
     typedef std::map<std::string,boost::shared_ptr<Port> > Ports;