diff --git a/CHANGELOG b/CHANGELOG
index 1b414bc0a..43a86c141 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -12,6 +12,9 @@ Changes between 2.4.2 and 2.4.3
   properly so that the pkg_resources.resource_stream method works properly.
   Fixes issue366.  Thanks for the investigations and full PR to Jason R. Coombs.
 
+- pytestconfig is now session-config as it is the same object during the
+  whole test run.  Fixes issue370. 
+
 - avoid one surprising case of marker malfunction/confusion::
   
       @pytest.mark.some(lambda arg: ...)
diff --git a/_pytest/python.py b/_pytest/python.py
index fc957acaa..9aa000588 100644
--- a/_pytest/python.py
+++ b/_pytest/python.py
@@ -157,7 +157,7 @@ def pytest_namespace():
         '_fillfuncargs': fillfixtures}
     }
 
-@fixture()
+@fixture(scope="session")
 def pytestconfig(request):
     """ the pytest config object with access to command line opts."""
     return request.config
@@ -1566,8 +1566,8 @@ class FixtureManager:
                 continue # will raise FixtureLookupError at setup time
             for fixturedef in faclist:
                 if fixturedef.params is not None:
-                    metafunc.parametrize(argname, fixturedef.params, indirect=True,
-                                         scope=fixturedef.scope)
+                    metafunc.parametrize(argname, fixturedef.params,
+                                         indirect=True, scope=fixturedef.scope)
 
     def pytest_collection_modifyitems(self, items):
         # separate parametrized setups
diff --git a/testing/python/integration.py b/testing/python/integration.py
index c8d9c4411..00e70df83 100644
--- a/testing/python/integration.py
+++ b/testing/python/integration.py
@@ -150,3 +150,7 @@ class TestReRunTests:
         result.stdout.fnmatch_lines("""
             *2 passed*
         """)
+
+def test_pytestconfig_is_session_scoped():
+    from _pytest.python import pytestconfig
+    assert pytestconfig._pytestfixturefunction.scope == "session"