diff --git a/novaclient/utils.py b/novaclient/utils.py
index d866b7200..991a436b3 100644
--- a/novaclient/utils.py
+++ b/novaclient/utils.py
@@ -179,8 +179,8 @@ def find_resource(manager, name_or_id):
             return manager.find(name=name_or_id)
         except exceptions.NotFound:
             try:
-                # Volumes does not have name, but displayName
-                return manager.find(displayName=name_or_id)
+                # Volumes does not have name, but display_name
+                return manager.find(display_name=name_or_id)
             except exceptions.NotFound:
                 msg = "No %s with a name or ID of '%s' exists." % \
                     (manager.resource_class.__name__.lower(), name_or_id)
diff --git a/novaclient/v1_1/shell.py b/novaclient/v1_1/shell.py
index 46beab37a..a67d87424 100644
--- a/novaclient/v1_1/shell.py
+++ b/novaclient/v1_1/shell.py
@@ -915,7 +915,6 @@ def do_volume_delete(cs, args):
     help='Name or ID of server.')
 @utils.arg('volume',
     metavar='<volume>',
-    type=int,
     help='ID of the volume to attach.')
 @utils.arg('device', metavar='<device>',
     help='Name of the device e.g. /dev/vdb.')
@@ -931,7 +930,6 @@ def do_volume_attach(cs, args):
     help='Name or ID of server.')
 @utils.arg('attachment_id',
     metavar='<volume>',
-    type=int,
     help='Attachment ID of the volume.')
 def do_volume_detach(cs, args):
     """Detach a volume from a server."""
diff --git a/tests/test_utils.py b/tests/test_utils.py
index 5cf7bd81e..44006e420 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -16,7 +16,7 @@ def __init__(self, _id, properties):
         except KeyError:
             pass
         try:
-            self.displayName = properties['displayName']
+            self.display_name = properties['display_name']
         except KeyError:
             pass
 
@@ -28,7 +28,7 @@ class FakeManager(base.ManagerWithFind):
     resources = [
         FakeResource('1234', {'name': 'entity_one'}),
         FakeResource(UUID, {'name': 'entity_two'}),
-        FakeResource('4242', {'displayName': 'entity_three'}),
+        FakeResource('4242', {'display_name': 'entity_three'}),
         FakeResource('5678', {'name': '9876'})
     ]