diff --git a/libs/ardour/MSVClibardour/ardour.vcproj b/libs/ardour/MSVClibardour/ardour.vcproj
index ac51b71d24..eb8d83c928 100644
--- a/libs/ardour/MSVClibardour/ardour.vcproj
+++ b/libs/ardour/MSVClibardour/ardour.vcproj
@@ -1263,6 +1263,10 @@
 				RelativePath="..\transient_detector.cc"
 				>
 			</File>
+			<File
+				RelativePath="..\transpose.cc"
+				>
+			</File>
 			<File
 				RelativePath="..\unknown_processor.cc"
 				>
@@ -2233,6 +2237,10 @@
 				RelativePath="..\ardour\transient_detector.h"
 				>
 			</File>
+			<File
+				RelativePath="..\ardour\transpose.h"
+				>
+			</File>
 			<File
 				RelativePath="..\ardour\trimmable.h"
 				>