diff --git a/appveyor.yml b/appveyor.yml
index a34d4690a..94886c8b6 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -75,7 +75,7 @@ build_script:
 test_script:
 - cd c:\pillow
 - '%PYTHON%\%PIP_DIR%\pip.exe install pytest pytest-cov'
-- '%PYTHON%\%EXECUTABLE% -m pytest -vx --cov PIL --cov-append --cov-report term --cov-report xml Tests'
+- '%PYTHON%\%EXECUTABLE% -m pytest -vx --cov PIL --cov-report term --cov-report xml Tests'
 #- '%PYTHON%\%EXECUTABLE% test-installed.py -v -s %TEST_OPTIONS%' TODO TEST_OPTIONS with pytest?
 
 after_test:
diff --git a/setup.cfg b/setup.cfg
index fb2d177d6..4a1338396 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -3,4 +3,4 @@ test=pytest
 [metadata]
 license_file = LICENSE
 [tool:pytest]
-addopts = -vx --cov PIL --cov-append --cov-report term Tests
+addopts = -vx --cov PIL --cov-report term Tests