diff --git a/libs/pbd/MSVCpbd/pbd.vcproj b/libs/pbd/MSVCpbd/pbd.vcproj
index dda602ff13..eec54e70a9 100644
--- a/libs/pbd/MSVCpbd/pbd.vcproj
+++ b/libs/pbd/MSVCpbd/pbd.vcproj
@@ -744,6 +744,10 @@
 				RelativePath="..\pbd\ringbufferNPT.h"
 				>
 			</File>
+			<File
+				RelativePath="..\pbd\scoped_file_descriptor.h"
+				>
+			</File>
 			<File
 				RelativePath="..\pbd\search_path.h"
 				>