diff --git a/stepmania/src/StepMania.vcproj b/stepmania/src/StepMania.vcproj
index a8b6ee87a7..7b1770ad02 100644
--- a/stepmania/src/StepMania.vcproj
+++ b/stepmania/src/StepMania.vcproj
@@ -1053,6 +1053,12 @@ cl /Zl /nologo /c verstub.cpp /Fo$(IntDir)\
 			<File
 				RelativePath=".\GradeDisplay.h">
 			</File>
+			<File
+				RelativePath="GrooveGraph.cpp">
+			</File>
+			<File
+				RelativePath="GrooveGraph.h">
+			</File>
 			<File
 				RelativePath="GrooveRadar.cpp">
 			</File>