diff --git a/.appveyor.yml b/.appveyor.yml
index dd76f2f348..68d1892e48 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -10,7 +10,7 @@ branches:
     - /^rel\/.*/
     - /^(.*\/)?ci-.*$/
 build_script:
-  - ps: .\build.ps1
+  - ps: .\build.cmd
 clone_depth: 1
 environment:
   global: