diff --git a/libs/ardour/ardour/audioengine.h b/libs/ardour/ardour/audioengine.h
index 8b38aea6b5..181cfd1a97 100644
--- a/libs/ardour/ardour/audioengine.h
+++ b/libs/ardour/ardour/audioengine.h
@@ -44,10 +44,6 @@
 #include "ardour/chan_count.h"
 #include "ardour/port_manager.h"
 
-#ifdef HAVE_JACK_SESSION
-#include <jack/session.h>
-#endif
-
 class MTDM;
 
 namespace ARDOUR {
diff --git a/libs/ardour/ardour/plugin.h b/libs/ardour/ardour/plugin.h
index a69b87efbd..c485243bd4 100644
--- a/libs/ardour/ardour/plugin.h
+++ b/libs/ardour/ardour/plugin.h
@@ -26,7 +26,6 @@
 #include "pbd/statefuldestructible.h"
 #include "pbd/controllable.h"
 
-#include <jack/types.h>
 #include "ardour/chan_count.h"
 #include "ardour/chan_mapping.h"
 #include "ardour/cycles.h"
diff --git a/libs/ardour/ardour/session.h b/libs/ardour/ardour/session.h
index 0368ecb0c0..8621b64578 100644
--- a/libs/ardour/ardour/session.h
+++ b/libs/ardour/ardour/session.h
@@ -62,10 +62,6 @@
 #include "ardour/interpolation.h"
 #include "ardour/route_graph.h"
 
-#ifdef HAVE_JACK_SESSION
-#include <jack/session.h>
-#endif
-
 
 class XMLTree;
 class XMLNode;