diff --git a/libs/ardour/MSVClibardour/ardour.vcproj b/libs/ardour/MSVClibardour/ardour.vcproj
index a48c0bb960..5aaae81383 100644
--- a/libs/ardour/MSVClibardour/ardour.vcproj
+++ b/libs/ardour/MSVClibardour/ardour.vcproj
@@ -1235,6 +1235,10 @@
 				RelativePath="..\track.cc"
 				>
 			</File>
+			<File
+				RelativePath="..\transform.cc"
+				>
+			</File>
 			<File
 				RelativePath="..\transient_detector.cc"
 				>
@@ -2185,6 +2189,10 @@
 				RelativePath="..\ardour\track.h"
 				>
 			</File>
+			<File
+				RelativePath="..\ardour\transform.h"
+				>
+			</File>
 			<File
 				RelativePath="..\ardour\transient_detector.h"
 				>