diff --git a/requests_oauthlib/compliance_fixes/__init__.py b/requests_oauthlib/compliance_fixes/__init__.py
index 65e49c15..1084f63d 100644
--- a/requests_oauthlib/compliance_fixes/__init__.py
+++ b/requests_oauthlib/compliance_fixes/__init__.py
@@ -6,3 +6,4 @@
 from .slack import slack_compliance_fix
 from .mailchimp import mailchimp_compliance_fix
 from .weibo import weibo_compliance_fix
+from .plentymarkets import plentymarkets_compliance_fix
diff --git a/requests_oauthlib/compliance_fixes/plentymarkets.py b/requests_oauthlib/compliance_fixes/plentymarkets.py
new file mode 100644
index 00000000..1b8a236f
--- /dev/null
+++ b/requests_oauthlib/compliance_fixes/plentymarkets.py
@@ -0,0 +1,27 @@
+from json import dumps, loads
+import re
+
+from oauthlib.common import to_unicode
+
+
+def plentymarkets_compliance_fix(session):
+
+    def _to_snake_case(n):
+        return re.sub('(.)([A-Z][a-z]+)', r'\1_\2', n).lower()
+
+    def _compliance_fix(r):
+        # Plenty returns the Token in CamelCase instead of _
+        if 'application/json' in r.headers.get('content-type', {}) and r.status_code == 200:
+            token = loads(r.text)
+        else:
+            return r
+
+        fixed_token = {}
+        for k, v in token.items():
+            fixed_token[_to_snake_case(k)] = v
+
+        r._content = to_unicode(dumps(fixed_token)).encode('UTF-8')
+        return r
+
+    session.register_compliance_hook('access_token_response', _compliance_fix)
+    return session
diff --git a/tests/test_compliance_fixes.py b/tests/test_compliance_fixes.py
index 0184d33b..8e9ee2df 100644
--- a/tests/test_compliance_fixes.py
+++ b/tests/test_compliance_fixes.py
@@ -20,6 +20,7 @@
 from requests_oauthlib.compliance_fixes import mailchimp_compliance_fix
 from requests_oauthlib.compliance_fixes import weibo_compliance_fix
 from requests_oauthlib.compliance_fixes import slack_compliance_fix
+from requests_oauthlib.compliance_fixes import plentymarkets_compliance_fix
 
 
 class FacebookComplianceFixTest(TestCase):
@@ -275,3 +276,40 @@ def test_protected_request_override_token_url(self):
         query = parse_qs(urlparse(url).query)
         self.assertEqual(query["token"], ["different-token"])
         self.assertIsNone(response.request.body)
+
+
+class PlentymarketsComplianceFixTest(TestCase):
+
+    def setUp(self):
+        mocker = requests_mock.Mocker()
+        mocker.post(
+            "https://shop.plentymarkets-cloud02.com",
+            json=
+            {
+            "accessToken": "ecUN1r8KhJewMCdLAmpHOdZ4O0ofXKB9zf6CXK61",
+            "tokenType": "Bearer",
+            "expiresIn": 86400,
+            "refreshToken": "iG2kBGIjcXaRE4xmTVUnv7xwxX7XMcWCHqJmFaSX"
+            },
+            headers={"Content-Type": "application/json"}
+        )
+        mocker.start()
+        self.addCleanup(mocker.stop)
+
+        plentymarkets = OAuth2Session('foo', redirect_uri='https://i.b')
+        self.session = plentymarkets_compliance_fix(plentymarkets)
+
+    def test_fetch_access_token(self):
+        token = self.session.fetch_token(
+            "https://shop.plentymarkets-cloud02.com",
+             authorization_response='https://i.b/?code=hello',
+        )
+
+        approx_expires_at = time.time() + 86400
+        actual_expires_at = token.pop('expires_at')
+        self.assertAlmostEqual(actual_expires_at, approx_expires_at, places=2)
+
+        self.assertEqual(token, {u'access_token': u'ecUN1r8KhJewMCdLAmpHOdZ4O0ofXKB9zf6CXK61',
+                                 u'expires_in': 86400,
+                                 u'token_type': u'Bearer',
+                                 u'refresh_token': u'iG2kBGIjcXaRE4xmTVUnv7xwxX7XMcWCHqJmFaSX'})