diff --git a/appveyor.yml b/appveyor.yml
index 36e0c1f1d..ec1794edd 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -12,6 +12,7 @@ init:
       }
 
 install:
+  - rmdir c:\go /s /q
   - appveyor DownloadFile https://storage.googleapis.com/golang/go1.5.1.windows-amd64.msi
   - msiexec /i go1.5.1.windows-amd64.msi /q
   - go version