diff --git a/appveyor.yml b/appveyor.yml
index f4b82e737..c64f9b69a 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -43,7 +43,7 @@ before_build:
   - echo Running cmake...
   - cd c:\projects\OpenBLAS
   - set CLCACHE_CL=%COMPILER%
-  - ps: pip install git+https://github.com/frerich/clcache.git; $LastExitCode=0
+  - pip install -q git+https://github.com/frerich/clcache.git
   - if [%COMPILER%]==[cl] cmake -G "Visual Studio 12 Win64" -DCMAKE_CXX_COMPILER=clcache -DCMAKE_C_COMPILER=clcache .
   - if [%COMPILER%]==[clang-cl] cmake -G "Ninja" -DCMAKE_CXX_COMPILER=clcache -DCMAKE_C_COMPILER=clcache .
   - if [%DYNAMIC_ARCH%]==[ON] cmake -DDYNAMIC_ARCH=ON .