diff --git a/ironic/common/exception.py b/ironic/common/exception.py
index 38079f5459..ccbee40a95 100644
--- a/ironic/common/exception.py
+++ b/ironic/common/exception.py
@@ -27,7 +27,6 @@ from six.moves import http_client
 
 from ironic.common.i18n import _
 from ironic.common.i18n import _LE
-from ironic.common.i18n import _LW
 
 
 LOG = logging.getLogger(__name__)
@@ -71,15 +70,6 @@ class IronicException(Exception):
                 pass
 
         if not message:
-            # Check if class is using deprecated 'message' attribute.
-            if (hasattr(self, 'message') and self.message):
-                LOG.warning(_LW("Exception class: %s Using the 'message' "
-                                "attribute in an exception has been "
-                                "deprecated. The exception class should be "
-                                "modified to use the '_msg_fmt' "
-                                "attribute."), self.__class__.__name__)
-                self._msg_fmt = self.message
-
             try:
                 message = self._msg_fmt % kwargs
 
diff --git a/ironic/tests/unit/common/test_exception.py b/ironic/tests/unit/common/test_exception.py
index 69d2d6e6a6..c4dee60458 100644
--- a/ironic/tests/unit/common/test_exception.py
+++ b/ironic/tests/unit/common/test_exception.py
@@ -12,17 +12,12 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import mock
 import six
 
 from ironic.common import exception
 from ironic.tests import base
 
 
-class DeprecatedException(exception.IronicException):
-    message = 'Using message is deprecated %(foo)s'
-
-
 class TestIronicException(base.TestCase):
     def test____init__(self):
         expected = b'\xc3\xa9\xe0\xaf\xb2\xe0\xbe\x84'
@@ -33,13 +28,3 @@ class TestIronicException(base.TestCase):
             message = unichr(233) + unichr(0x0bf2) + unichr(3972)
         exc = exception.IronicException(message)
         self.assertEqual(expected, exc.__str__())
-
-    @mock.patch.object(exception.LOG, 'warning', autospec=True)
-    def test_message_deprecated(self, mock_logw):
-        exc = DeprecatedException(foo='spam')
-        mock_logw.assert_called_once_with(
-            "Exception class: %s Using the 'message' "
-            "attribute in an exception has been deprecated. The exception "
-            "class should be modified to use the '_msg_fmt' attribute.",
-            'DeprecatedException')
-        self.assertEqual('Using message is deprecated spam', str(exc))
diff --git a/releasenotes/notes/remove-exception-message-92100debeb40d4c7.yaml b/releasenotes/notes/remove-exception-message-92100debeb40d4c7.yaml
new file mode 100644
index 0000000000..9ef7a3c582
--- /dev/null
+++ b/releasenotes/notes/remove-exception-message-92100debeb40d4c7.yaml
@@ -0,0 +1,6 @@
+---
+upgrade:
+  - Removes support for the "message" attribute from the
+    "IronicException" class. Subclasses of "IronicException"
+    should instead use the "_msg_fmt" attribute.
+    This change is only relevant to developers.