diff --git a/stepmania/src/StepMania.vcproj b/stepmania/src/StepMania.vcproj
index 016e2985a1..8b45edf838 100644
--- a/stepmania/src/StepMania.vcproj
+++ b/stepmania/src/StepMania.vcproj
@@ -899,6 +899,12 @@ cl /Zl /nologo /c verstub.cpp /Fo"$(IntDir)"\
 			<File
 				RelativePath="Trail.h">
 			</File>
+			<File
+				RelativePath="TrailUtil.cpp">
+			</File>
+			<File
+				RelativePath="TrailUtil.h">
+			</File>
 		</Filter>
 		<Filter
 			Name="File Types"