diff --git a/appveyor.yml b/appveyor.yml
index b3286ba1..dca48315 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -12,17 +12,8 @@ build: false
 deploy: true
 
 install:
-  - ps: if(true)
-        {
-          curl -outfile mw64.7z "http://libgd.blob.core.windows.net/mingw/x86_64-4.9.1-release-posix-seh-rt_v3-rev1.7z";
-          if((Get-FileHash mw64.7z -Algorithm SHA1).Hash -ne "91A35AE296C1A71802AB0C7228EE57F9AAC5D7C7")
-          {
-            echo "Invalid file hash";
-            exit 1;
-          };
-          7z x -oC:\ mw64.7z | out-null;
-        }
-  - set GCC=C:\mingw64
+  - ps: Start-FileDownload "http://libgd.blob.core.windows.net/mingw/x86_64-4.9.1-release-posix-seh-rt_v3-rev1.7z"
+  - ps: 7z x -o C:\x86_64-4.9.1-release-posix-seh-rt_v3-rev1.7z | out-null
   - echo %PATH%
   - echo %GOPATH%
   - go version