diff --git a/libs/ardour/MSVClibardour/ardour.vcproj b/libs/ardour/MSVClibardour/ardour.vcproj
index ada2f730f6..d1c7435f23 100644
--- a/libs/ardour/MSVClibardour/ardour.vcproj
+++ b/libs/ardour/MSVClibardour/ardour.vcproj
@@ -567,6 +567,10 @@
 				RelativePath="..\find_session.cc"
 				>
 			</File>
+			<File
+				RelativePath="..\fixed_delay.cc"
+				>
+			</File>
 			<File
 				RelativePath="..\gain_control.cc"
 				>
@@ -1697,6 +1701,10 @@
 				RelativePath="..\ardour\filter.h"
 				>
 			</File>
+			<File
+				RelativePath="..\ardour\fixed_delay.h"
+				>
+			</File>
 			<File
 				RelativePath="..\ardour\gain_control.h"
 				>