diff --git a/Authors b/Authors
index 90de6818325..588ce08e209 100644
--- a/Authors
+++ b/Authors
@@ -148,6 +148,7 @@ Tim Simpson <tim.simpson@rackspace.com>
 Todd Willey <todd@ansolabs.com>
 Tomoe Sugihara <tomoe@midokura.com>
 Tomoya Masuko<masukotm@nttdata.co.jp>
+Thorsten Tarrach <thorsten@atomia.com>
 Trey Morris <trey.morris@rackspace.com>
 Troy Toman <troy.toman@rackspace.com>
 Tushar Patil <tushar.vitthal.patil@gmail.com>
diff --git a/nova/api/ec2/cloud.py b/nova/api/ec2/cloud.py
index 5a3b952a979..55969b2eb24 100644
--- a/nova/api/ec2/cloud.py
+++ b/nova/api/ec2/cloud.py
@@ -1201,7 +1201,7 @@ def allocate_address(self, context, **kwargs):
     def release_address(self, context, public_ip, **kwargs):
         LOG.audit(_("Release address %s"), public_ip, context=context)
         self.network_api.release_floating_ip(context, address=public_ip)
-        return {'releaseResponse': ["Address released."]}
+        return {'return': "true"}
 
     def associate_address(self, context, instance_id, public_ip, **kwargs):
         LOG.audit(_("Associate address %(public_ip)s to"
@@ -1211,12 +1211,12 @@ def associate_address(self, context, instance_id, public_ip, **kwargs):
         self.compute_api.associate_floating_ip(context,
                                                instance,
                                                address=public_ip)
-        return {'associateResponse': ["Address associated."]}
+        return {'return': "true"}
 
     def disassociate_address(self, context, public_ip, **kwargs):
         LOG.audit(_("Disassociate address %s"), public_ip, context=context)
         self.network_api.disassociate_floating_ip(context, address=public_ip)
-        return {'disassociateResponse': ["Address disassociated."]}
+        return {'return': "true"}
 
     def run_instances(self, context, **kwargs):
         max_count = int(kwargs.get('max_count', 1))
diff --git a/nova/tests/api/ec2/test_cloud.py b/nova/tests/api/ec2/test_cloud.py
index d5fccffb9e6..ee0f318211c 100644
--- a/nova/tests/api/ec2/test_cloud.py
+++ b/nova/tests/api/ec2/test_cloud.py
@@ -196,7 +196,7 @@ def test_release_address(self):
                                'pool': 'nova',
                                'project_id': self.project_id})
         result = self.cloud.release_address(self.context, address)
-        self.assertEqual(result['releaseResponse'], ['Address released.'])
+        self.assertEqual(result.get('return', None), 'true')
 
     def test_associate_disassociate_address(self):
         """Verifies associate runs cleanly without raising an exception"""