diff --git a/nova_powervm/tests/virt/powervm/test_driver.py b/nova_powervm/tests/virt/powervm/test_driver.py
index e6232f69..f1df41c5 100644
--- a/nova_powervm/tests/virt/powervm/test_driver.py
+++ b/nova_powervm/tests/virt/powervm/test_driver.py
@@ -1769,7 +1769,7 @@ class TestPowerVMDriver(test.TestCase):
             'block_mig', 'migrate_data')
         self.lpm.migration_abort.assert_called_once_with()
         mock_rec_meth.assert_called_once_with(
-            'context', self.lpm_inst, 'dest', mock.ANY, mock.ANY)
+            'context', self.lpm_inst, 'dest', migrate_data=mock.ANY)
         self.lpm.rollback_live_migration.assert_called_once_with('context')
         self.assertEqual(0, mock_post_meth.call_count)
 
@@ -1783,7 +1783,7 @@ class TestPowerVMDriver(test.TestCase):
             'context', self.lpm_inst, 'dest', mock_post_meth, mock_rec_meth,
             'block_mig', 'migrate_data')
         mock_rec_meth.assert_called_once_with(
-            'context', self.lpm_inst, 'dest', mock.ANY, mock.ANY)
+            'context', self.lpm_inst, 'dest', migrate_data=mock.ANY)
         self.lpm.rollback_live_migration.assert_called_once_with('context')
         self.assertEqual(0, mock_post_meth.call_count)
 
@@ -1799,7 +1799,7 @@ class TestPowerVMDriver(test.TestCase):
             'context', self.lpm_inst, 'dest', mock_post_meth, mock_rec_meth,
             'block_mig', 'migrate_data')
         mock_rec_meth.assert_called_once_with(
-            'context', self.lpm_inst, 'dest', mock.ANY, mock.ANY)
+            'context', self.lpm_inst, 'dest', migrate_data=mock.ANY)
         self.lpm.rollback_live_migration.assert_called_once_with('context')
         self.assertEqual(0, mock_post_meth.call_count)
 
diff --git a/nova_powervm/virt/powervm/driver.py b/nova_powervm/virt/powervm/driver.py
index 859a5ba1..aaafb362 100644
--- a/nova_powervm/virt/powervm/driver.py
+++ b/nova_powervm/virt/powervm/driver.py
@@ -1484,14 +1484,14 @@ class PowerVMDriver(driver.ComputeDriver):
                 mig.migration_abort()
                 self._migration_exception_util(context, instance, dest,
                                                recover_method,
-                                               block_migration, migrate_data,
+                                               migrate_data,
                                                mig, ex=timeout_ex)
             except Exception as e:
                 LOG.exception("PowerVM error during live migration.",
                               instance=instance)
                 self._migration_exception_util(context, instance, dest,
                                                recover_method,
-                                               block_migration, migrate_data,
+                                               migrate_data,
                                                mig, ex=e)
 
             LOG.debug("Calling post live migration method.", instance=instance)
@@ -1502,8 +1502,7 @@ class PowerVMDriver(driver.ComputeDriver):
             del self.live_migrations[instance.uuid]
 
     def _migration_exception_util(self, context, instance, dest,
-                                  recover_method, block_migration,
-                                  migrate_data, mig, ex):
+                                  recover_method, migrate_data, mig, ex):
         """Migration exception utility.
 
         :param context: security context
@@ -1514,7 +1513,6 @@ class PowerVMDriver(driver.ComputeDriver):
         :param recover_method:
             recovery method when any exception occurs.
             expected nova.compute.manager._rollback_live_migration.
-        :param block_migration: if true, migrate VM disk.
         :param migrate_data: a LiveMigrateData object
         :param mig: live_migration object
         :param ex: exception reason
@@ -1523,8 +1521,7 @@ class PowerVMDriver(driver.ComputeDriver):
         LOG.warning(_LW("Rolling back live migration."), instance=instance)
         try:
             mig.rollback_live_migration(context)
-            recover_method(context, instance, dest, block_migration,
-                           migrate_data)
+            recover_method(context, instance, dest, migrate_data=migrate_data)
         except Exception:
             LOG.exception("PowerVM error rolling back live migration.",
                           instance=instance)