diff --git a/MSVCardour3/Ardour3.vcproj b/MSVCardour3/Ardour3.vcproj
index 511caabc2d..dd0f249524 100644
--- a/MSVCardour3/Ardour3.vcproj
+++ b/MSVCardour3/Ardour3.vcproj
@@ -1533,6 +1533,10 @@
 				RelativePath="..\gtk2_ardour\editing.h"
 				>
 			</File>
+			<File
+				RelativePath="..\gtk2_ardour\editing_convert.h"
+				>
+			</File>
 			<File
 				RelativePath="..\gtk2_ardour\editing_syms.h"
 				>
@@ -1597,6 +1601,10 @@
 				RelativePath="..\gtk2_ardour\enums.h"
 				>
 			</File>
+			<File
+				RelativePath="..\gtk2_ardour\enums_convert.h"
+				>
+			</File>
 			<File
 				RelativePath="..\gtk2_ardour\export_channel_selector.h"
 				>
diff --git a/gtk2_ardour/ui_config.h b/gtk2_ardour/ui_config.h
index 977ec20351..09d4f15e47 100644
--- a/gtk2_ardour/ui_config.h
+++ b/gtk2_ardour/ui_config.h
@@ -28,6 +28,7 @@
 #include <boost/bind.hpp>
 
 #include "ardour/types.h" // required for opeators used in pbd/configuration_variable.h
+#include "ardour/types_convert.h"
 
 #include "pbd/stateful.h"
 #include "pbd/xml++.h"