diff --git a/index.js b/index.js
index 9986732..8205e05 100644
--- a/index.js
+++ b/index.js
@@ -15,6 +15,7 @@ const InterestingVariables = [
     'INCLUDE',
     'LIB',
     'LIBPATH',
+    'VCINSTALLDIR',
     'Path',
     'Platform',
     'VisualStudioVersion',