diff --git a/libs/pbd/MSVCpbd/pbd.vcproj b/libs/pbd/MSVCpbd/pbd.vcproj
index eec54e70a9..244328d41b 100644
--- a/libs/pbd/MSVCpbd/pbd.vcproj
+++ b/libs/pbd/MSVCpbd/pbd.vcproj
@@ -286,6 +286,10 @@
 				RelativePath="..\command.cc"
 				>
 			</File>
+			<File
+				RelativePath="..\configuration_variable.cc"
+				>
+			</File>
 			<File
 				RelativePath="..\controllable.cc"
 				>
@@ -648,6 +652,14 @@
 				RelativePath="..\pbd\compose.h"
 				>
 			</File>
+			<File
+				RelativePath="..\pbd\configuration.h"
+				>
+			</File>
+			<File
+				RelativePath="..\pbd\configuration_variable.h"
+				>
+			</File>
 			<File
 				RelativePath="..\pbd\crossthread.h"
 				>