diff --git a/appveyor.yml b/appveyor.yml
index c609d69fb1..aeb5d4eef2 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -19,7 +19,7 @@ before_build:
 build_script:
 - ps: .\build.ps1 -Target "AppVeyor" -Platform "$env:platform" -Configuration "$env:configuration"
 after_build:
-- cmd set PATH=%USERPROFILE%\.nuget\packages\JetBrains.dotMemoryUnit.2.1.20150828.125449\tools;%PATH%
+- cmd: set PATH=%USERPROFILE%\.nuget\packages\JetBrains.dotMemoryUnit.2.1.20150828.125449\tools;%PATH%
 - dotMemoryUnit.exe -targetExecutable="%xunit20%\xunit.console.x86.exe" -returnTargetExitCode  --"tests\Avalonia.LeakTests\bin\Release\Avalonia.LeakTests.dll"
 - "SET PATH=C:\\Python34;C:\\Python34\\Scripts;%PATH%"
 - pip install codecov