diff --git a/pytest.ini b/pytest.ini
index 18458fe7a..49c4cfa90 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -6,6 +6,7 @@ markers =
     windows: Tests which only can run on Windows.
     linux: Tests which only can run on Linux.
     osx: Tests which only can run on OS X.
+    not_osx: Tests which can not run on OS X.
     not_frozen: Tests which can't be run if sys.frozen is True.
     frozen: Tests which can only be run if sys.frozen is True.
     integration: Tests which test a bigger portion of code, run without coverage.
diff --git a/tests/conftest.py b/tests/conftest.py
index 4e09840ac..b2d3851a4 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -89,6 +89,7 @@ def pytest_runtest_setup(item):
         ('windows', os.name != 'nt', "Requires Windows"),
         ('linux', not sys.platform.startswith('linux'), "Requires Linux"),
         ('osx', sys.platform != 'darwin', "Requires OS X"),
+        ('not_osx', sys.platform == 'darwin', "Skipped on OS X"),
         ('not_frozen', getattr(sys, 'frozen', False),
             "Can't be run when frozen"),
         ('frozen', not getattr(sys, 'frozen', False),