6 files changed, 4 insertions, 2 deletions
diff --git a/gtk2_ardour/route_params_ui.cc b/gtk2_ardour/route_params_ui.cc
index 9e11dcd022..d1a570c9c5 100644
--- a/gtk2_ardour/route_params_ui.cc
+++ b/gtk2_ardour/route_params_ui.cc
@@ -25,6 +25,7 @@
 #include <gtkmm2ext/window_title.h>
 
 #include "ardour/ardour.h"
+#include "ardour/audioengine.h"
 #include "ardour/audio_diskstream.h"
 #include "ardour/audio_track.h"
 #include "ardour/plugin.h"
diff --git a/libs/ardour/ardour/return.h b/libs/ardour/ardour/return.h
index 344e877ddf..3d9fb9a9bd 100644
--- a/libs/ardour/ardour/return.h
+++ b/libs/ardour/ardour/return.h
@@ -26,7 +26,6 @@
 
 #include "pbd/stateful.h"
 #include "ardour/ardour.h"
-#include "ardour/audioengine.h"
 #include "ardour/io_processor.h"
 
 namespace ARDOUR {
diff --git a/libs/ardour/ardour/send.h b/libs/ardour/ardour/send.h
index 40045d6b85..6afc131e70 100644
--- a/libs/ardour/ardour/send.h
+++ b/libs/ardour/ardour/send.h
@@ -25,7 +25,6 @@
 #include "pbd/stateful.h"
 
 #include "ardour/ardour.h"
-#include "ardour/audioengine.h"
 #include "ardour/delivery.h"
 
 namespace ARDOUR {
diff --git a/libs/ardour/internal_return.cc b/libs/ardour/internal_return.cc
index e3ef2e2b06..ef38d806ff 100644
--- a/libs/ardour/internal_return.cc
+++ b/libs/ardour/internal_return.cc
@@ -25,6 +25,7 @@
 #include "ardour/mute_master.h"
 #include "ardour/session.h"
 #include "ardour/internal_send.h"
+#include "ardour/audioengine.h"
 
 using namespace std;
 using namespace ARDOUR;
diff --git a/libs/ardour/internal_send.cc b/libs/ardour/internal_send.cc
index bd2efbe12d..cfed48e223 100644
--- a/libs/ardour/internal_send.cc
+++ b/libs/ardour/internal_send.cc
@@ -29,6 +29,7 @@
 #include "ardour/panner_shell.h"
 #include "ardour/route.h"
 #include "ardour/session.h"
+#include "ardour/audioengine.h"
 
 #include "i18n.h"
 
diff --git a/libs/ardour/return.cc b/libs/ardour/return.cc
index a1374feb8a..ca02b11dc0 100644
--- a/libs/ardour/return.cc
+++ b/libs/ardour/return.cc
@@ -31,6 +31,7 @@
 #include "ardour/return.h"
 #include "ardour/session.h"
 #include "ardour/mute_master.h"
+#include "ardour/audioengine.h"
 
 #include "i18n.h"