diff --git a/contrib/msi/build-msi-ie.sh b/contrib/msi/build-msi-ie.sh
index 45c7408e..1cf5a687 100644
--- a/contrib/msi/build-msi-ie.sh
+++ b/contrib/msi/build-msi-ie.sh
@@ -278,7 +278,7 @@ cat > wix.xml << EOF
Directory="DesktopFolder"
Target="%WINDIR%\system32\cscript"
Arguments="[MeshInstallFolder]mesh-ui-ie.js"
- WorkingDirectory="MeshInstallFolder">
+ WorkingDirectory="%WINDIR%\system32">