diff --git a/stepmania/src/StepMania-net2005.vcproj b/stepmania/src/StepMania-net2005.vcproj
index 00938b51f2..4573943bfd 100644
--- a/stepmania/src/StepMania-net2005.vcproj
+++ b/stepmania/src/StepMania-net2005.vcproj
@@ -3130,6 +3130,10 @@
 				RelativePath="RageSoundPosMap.h"
 				>
 			</File>
+			<File
+				RelativePath=".\RageSoundReader.cpp"
+				>
+			</File>
 			<File
 				RelativePath="RageSoundReader.h"
 				>