diff --git a/libs/ardour/ardour/ladspa_plugin.h b/libs/ardour/ardour/ladspa_plugin.h
index a3b99575fe..473953e221 100644
--- a/libs/ardour/ardour/ladspa_plugin.h
+++ b/libs/ardour/ardour/ladspa_plugin.h
@@ -28,7 +28,6 @@
 
 #include "pbd/stateful.h"
 
-#include <jack/types.h>
 #include "ardour/ladspa.h"
 #include "ardour/plugin.h"
 
diff --git a/libs/ardour/graph.cc b/libs/ardour/graph.cc
index f8a1d51e10..3e87853319 100644
--- a/libs/ardour/graph.cc
+++ b/libs/ardour/graph.cc
@@ -32,8 +32,6 @@
 #include "ardour/process_thread.h"
 #include "ardour/audioengine.h"
 
-#include <jack/thread.h>
-
 #include "i18n.h"
 
 using namespace ARDOUR;
diff --git a/libs/surfaces/control_protocol/control_protocol/basic_ui.h b/libs/surfaces/control_protocol/control_protocol/basic_ui.h
index 180688e616..277a7f8ecd 100644
--- a/libs/surfaces/control_protocol/control_protocol/basic_ui.h
+++ b/libs/surfaces/control_protocol/control_protocol/basic_ui.h
@@ -28,8 +28,6 @@
 
 #include "ardour/types.h"
 
-#include <jack/types.h>
-
 #include "timecode/time.h"
 
 #include "control_protocol/visibility.h"