diff --git a/appveyor.yml b/appveyor.yml
index a2a7ee954..e0e0d559f 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -2,13 +2,14 @@ install:
 - 'git submodule update --init'
 - 'choco install haskellplatform -version 2014.2.0.0 -y'
 - 'SET PATH="%PATH%;C:\Program Files\Haskell Platform\2014.2.0.0\bin;C:\Program Files\Haskell Platform\2014.2.0.0\lib\extralibs\bin;C:\Program Files\Haskell Platform\2014.2.0.0\mingw\bin"'
-- 'reg add "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v Path /t REG_SZ /d "%path%;C:\Program Files\Haskell Platform\2014.2.0.0\bin;C:\Program Files\Haskell Platform\2014.2.0.0\lib\extralibs\bin;C:\Program Files\Haskell Platform\2014.2.0.0\mingw\bin" /f'
 - cabal update
 - cabal install --only-dependencies --enable-tests -w "C:\Program Files\Haskell Platform\2014.2.0.0\bin\ghc-7.8.3"
 
 build_script:
+- 'SET PATH="%PATH%;C:\Program Files\Haskell Platform\2014.2.0.0\bin;C:\Program Files\Haskell Platform\2014.2.0.0\lib\extralibs\bin;C:\Program Files\Haskell Platform\2014.2.0.0\mingw\bin"'
 - 'cabal configure --enable-tests -v2 -w "C:\Program Files\Haskell Platform\2014.2.0.0\bin\ghc-7.8.3"'
 - 'cabal build'
 
 test_script:
+- 'SET PATH="%PATH%;C:\Program Files\Haskell Platform\2014.2.0.0\bin;C:\Program Files\Haskell Platform\2014.2.0.0\lib\extralibs\bin;C:\Program Files\Haskell Platform\2014.2.0.0\mingw\bin"'
 - 'cabal test'