diff --git a/f5/bigip/tm/sys/config.py b/f5/bigip/tm/sys/config.py
index cf0895da9..149bd9544 100644
--- a/f5/bigip/tm/sys/config.py
+++ b/f5/bigip/tm/sys/config.py
@@ -27,6 +27,7 @@
 """
 from f5.bigip.mixins import CommandExecutionMixin
 from f5.bigip.resource import UnnamedResource
+from f5.sdk_exception import UnsupportedMethod
 
 
 class Config(UnnamedResource,
@@ -43,6 +44,6 @@ def update(self, **kwargs):
 
         :raises: UnsupportedOperation
         '''
-        raise self.UnsupportedMethod(
+        raise UnsupportedMethod(
             "%s does not support the update method" % self.__class__.__name__
         )
diff --git a/test/functional/tm/sys/test_config.py b/test/functional/tm/sys/test_config.py
index c6654b936..b2ea9ebd3 100644
--- a/test/functional/tm/sys/test_config.py
+++ b/test/functional/tm/sys/test_config.py
@@ -13,8 +13,17 @@
 # limitations under the License.
 #
 
+from f5.sdk_exception import UnsupportedMethod
+
+import pytest
+
 
 class TestConfig(object):
     def test_save(self, bigip):
         c = bigip.sys.config
         c.exec_cmd('save')
+
+    def test_update(selfself, mgmt_root):
+        with pytest.raises(UnsupportedMethod) as ex:
+            mgmt_root.tm.sys.config.update(foo="bar")
+        assert 'does not support the update method' in ex.value.message