diff --git a/libs/ardour/plugin_insert.cc b/libs/ardour/plugin_insert.cc
index e0d92f4331..f7ddbed39a 100644
--- a/libs/ardour/plugin_insert.cc
+++ b/libs/ardour/plugin_insert.cc
@@ -46,7 +46,6 @@
 #include "ardour/port.h"
 #include "ardour/session.h"
 #include "ardour/types.h"
-#include "ardour/vst3_plugin.h"
 
 #include "pbd/i18n.h"
 
diff --git a/libs/ardour/region_fx_plugin.cc b/libs/ardour/region_fx_plugin.cc
index 87c5b59de4..5b92191e6c 100644
--- a/libs/ardour/region_fx_plugin.cc
+++ b/libs/ardour/region_fx_plugin.cc
@@ -32,7 +32,6 @@
 #include "ardour/readonly_control.h"
 #include "ardour/region_fx_plugin.h"
 #include "ardour/session.h"
-#include "ardour/vst3_plugin.h"
 
 using namespace std;
 using namespace ARDOUR;