diff --git a/.appveyor.yml b/.appveyor.yml
index 937eadda4..3bf5b9448 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,3 +1,4 @@
+shallow_clone: true
 version: '{branch}-{build}'
 cache:
   - C:\projects\qutebrowser\.cache
diff --git a/.travis.yml b/.travis.yml
index bfc656443..3c13186b5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -40,7 +40,7 @@ script:
   - tox -e $TESTENV -- -p no:sugar -v --cov-report term tests
 
 after_success:
-  - '[[ $TESTENV == py34 || $TESTENV == py35 ]] && codecov -e TESTENV -X gcov'
+  - '[[ ($TESTENV == py34 || $TESTENV == py35) && $TRAVIS_OX == linux ]] && codecov -e TESTENV -X gcov'
 
 matrix:
   exclude:
diff --git a/scripts/dev/ci_install.py b/scripts/dev/ci_install.py
index 11cc1f3c6..2d9b84352 100644
--- a/scripts/dev/ci_install.py
+++ b/scripts/dev/ci_install.py
@@ -44,7 +44,7 @@ INSTALL_PYQT = TESTENV in ('py34', 'py35', 'unittests-nodisp', 'vulture',
                            'pylint')
 XVFB = TRAVIS_OS == 'linux' and TESTENV == 'py34'
 pip_packages = ['tox']
-if TESTENV in ['py34', 'py35']:
+if TESTENV in ['py34', 'py35'] and TRAVIS_OS == 'linux':
     pip_packages.append('codecov')