Could this fix intermittent test failures in AV?

MehdiK · MehdiK · commit 5e5befbde043 · 2017-11-02T20:56:44.000+10:00
diff --git a/appveyor.yml b/appveyor.yml
@@ -8,7 +8,7 @@ configuration:
   - Release
 
 build_script:
-  - ps: .\build.ps1
+  - powershell .\build.ps1
 
 test: off
 skip_tags: true
