diff --git a/win32/Analysis/Analysis.vcproj b/win32/Analysis/Analysis.vcproj
index fd19cfd37a4..1a6d956265f 100644
--- a/win32/Analysis/Analysis.vcproj
+++ b/win32/Analysis/Analysis.vcproj
@@ -212,6 +212,9 @@
 				<File
 					RelativePath="..\..\lib\Analysis\DataStructure\DSCallSiteIterator.h">
 				</File>
+				<File
+					RelativePath="..\..\lib\Analysis\DataStructure\EquivClassGraphs.cpp">
+				</File>
 				<File
 					RelativePath="..\..\lib\Analysis\DataStructure\GraphChecker.cpp">
 				</File>