diff --git a/stepmania/src/StepMania-net2003.vcproj b/stepmania/src/StepMania-net2003.vcproj
index ac56c3696d..851444c3fd 100644
--- a/stepmania/src/StepMania-net2003.vcproj
+++ b/stepmania/src/StepMania-net2003.vcproj
@@ -800,6 +800,12 @@ cl /Zl /nologo /c verstub.cpp /Fo"$(IntDir)"\
 			<File
 				RelativePath="CodeDetector.h">
 			</File>
+			<File
+				RelativePath=".\CodeSet.cpp">
+			</File>
+			<File
+				RelativePath=".\CodeSet.h">
+			</File>
 			<File
 				RelativePath="Command.cpp">
 			</File>