diff --git a/appveyor.yml b/appveyor.yml
index 9fb56977..18ade0c8 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -22,4 +22,4 @@ install:
   - ps: Install-Product node $env:nodejs_version x86
   - npm install --arch=ia32 --msvs_version=2013
 test_script:
-  - npm run-script "test-win32-$env:nodejs_exec"
+  - npm run-script test-win32-%nodejs_exec%