diff --git a/.appveyor.yml b/.appveyor.yml
index 47cbb55a8..b2599e3d8 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -53,7 +53,6 @@ test_script:
 
 after_test:
 - curl -Os https://uploader.codecov.io/latest/windows/codecov.exe
-- chmod +x codecov
 - .\codecov.exe --file coverage.xml --name %PYTHON% --flags AppVeyor
 
 matrix: