diff --git a/libs/ardour/MSVClibardour/ardour.vcproj b/libs/ardour/MSVClibardour/ardour.vcproj
index e0aafe9f27..706b4ba429 100644
--- a/libs/ardour/MSVClibardour/ardour.vcproj
+++ b/libs/ardour/MSVClibardour/ardour.vcproj
@@ -891,6 +891,10 @@
 				RelativePath="..\route.cc"
 				>
 			</File>
+			<File
+				RelativePath="..\route_controls.cc"
+				>
+			</File>
 			<File
 				RelativePath="..\route_graph.cc"
 				>