diff --git a/MSVCardour3/Ardour3.vcproj b/MSVCardour3/Ardour3.vcproj
index e4517fc803..f81b28cfc1 100644
--- a/MSVCardour3/Ardour3.vcproj
+++ b/MSVCardour3/Ardour3.vcproj
@@ -443,6 +443,10 @@
 				RelativePath="..\gtk2_ardour\debug.cc"
 				>
 			</File>
+			<File
+				RelativePath="..\gtk2_ardour\duplicate_routes_dialog.cc"
+				>
+			</File>
 			<File
 				RelativePath="..\gtk2_ardour\edit_note_dialog.cc"
 				>
@@ -1441,6 +1445,10 @@
 				RelativePath="..\gtk2_ardour\debug.h"
 				>
 			</File>
+			<File
+				RelativePath="..\gtk2_ardour\duplicate_routes_dialog.h"
+				>
+			</File>
 			<File
 				RelativePath="..\gtk2_ardour\edit_note_dialog.h"
 				>