diff --git a/stepmania/src/StepMania.vcproj b/stepmania/src/StepMania.vcproj
index 04c2540411..a38fbbacc7 100644
--- a/stepmania/src/StepMania.vcproj
+++ b/stepmania/src/StepMania.vcproj
@@ -2438,6 +2438,12 @@ cl /Zl /nologo /c verstub.cpp /Fo"$(IntDir)"\
 			<File
 				RelativePath="ActorScroller.h">
 			</File>
+			<File
+				RelativePath="ActorSound.cpp">
+			</File>
+			<File
+				RelativePath="ActorSound.h">
+			</File>
 			<File
 				RelativePath="ActorUtil.cpp">
 			</File>