diff --git a/libs/ardour/MSVClibardour/ardour.vcproj b/libs/ardour/MSVClibardour/ardour.vcproj
index 4e7a4d0b23..ec935da505 100644
--- a/libs/ardour/MSVClibardour/ardour.vcproj
+++ b/libs/ardour/MSVClibardour/ardour.vcproj
@@ -899,6 +899,10 @@
 				RelativePath="..\port.cc"
 				>
 			</File>
+			<File
+				RelativePath="..\port_engine_shared.cc"
+				>
+			</File>
 			<File
 				RelativePath="..\port_insert.cc"
 				>
@@ -2205,6 +2209,10 @@
 				RelativePath="..\ardour\port.h"
 				>
 			</File>
+			<File
+				RelativePath="..\ardour\port_engine_shared.h"
+				>
+			</File>
 			<File
 				RelativePath="..\ardour\port_insert.h"
 				>