diff --git a/libs/ardour/MSVClibardour/ardour.vcproj b/libs/ardour/MSVClibardour/ardour.vcproj
index 1375a62e18..59121ed715 100644
--- a/libs/ardour/MSVClibardour/ardour.vcproj
+++ b/libs/ardour/MSVClibardour/ardour.vcproj
@@ -1423,6 +1423,10 @@
 				RelativePath="..\tempo_map_importer.cc"
 				>
 			</File>
+			<File
+				RelativePath="..\thawlist.cc"
+				>
+			</File>
 			<File
 				RelativePath="..\thread_buffers.cc"
 				>
@@ -2577,6 +2581,10 @@
 				RelativePath="..\ardour\tempo_map_importer.h"
 				>
 			</File>
+			<File
+				RelativePath="..\ardour\thawlist.h"
+				>
+			</File>
 			<File
 				RelativePath="..\ardour\thread_buffers.h"
 				>