diff --git a/watcher/common/exception.py b/watcher/common/exception.py
index 0a52833bd..b3479ae62 100644
--- a/watcher/common/exception.py
+++ b/watcher/common/exception.py
@@ -294,7 +294,7 @@ class MetricCollectorNotDefined(WatcherException):
     message = _("The metrics resource collector is not defined.'")
 
 
-class ClusteStateNotDefined(WatcherException):
+class ClusterStateNotDefined(WatcherException):
     message = _("the cluster state is not defined")
 
 
diff --git a/watcher/decision_engine/strategy/basic_consolidation.py b/watcher/decision_engine/strategy/basic_consolidation.py
index 9e09b409b..b493a9cf5 100644
--- a/watcher/decision_engine/strategy/basic_consolidation.py
+++ b/watcher/decision_engine/strategy/basic_consolidation.py
@@ -18,7 +18,7 @@
 #
 from oslo_log import log
 from watcher.common.exception import ClusterEmpty
-from watcher.common.exception import ClusteStateNotDefined
+from watcher.common.exception import ClusterStateNotDefined
 from watcher.decision_engine.actions.hypervisor_state import \
     ChangeHypervisorState
 from watcher.decision_engine.actions.migration import Migrate
@@ -297,7 +297,7 @@ class BasicConsolidation(BaseStrategy):
         :return: score
         """
         if model is None:
-            raise ClusteStateNotDefined()
+            raise ClusterStateNotDefined()
 
         vm_cpu_utilization = self.ceilometer. \
             statistic_aggregation(resource_id=vm.uuid,
@@ -321,7 +321,7 @@ class BasicConsolidation(BaseStrategy):
 
     def print_utilization(self, model):
         if model is None:
-            raise ClusteStateNotDefined()
+            raise ClusterStateNotDefined()
         for node_id in model.get_all_hypervisors():
             LOG.debug("{0} utilization {1} % ".
                       format(node_id,
@@ -334,7 +334,7 @@ class BasicConsolidation(BaseStrategy):
         LOG.debug("initialize Sercon Consolidation")
 
         if orign_model is None:
-            raise ClusteStateNotDefined()
+            raise ClusterStateNotDefined()
 
         # todo(jed) clone model
         current_model = orign_model
diff --git a/watcher/tests/decision_engine/test_basic_consolidation.py b/watcher/tests/decision_engine/test_basic_consolidation.py
index d32347953..07036ef3e 100644
--- a/watcher/tests/decision_engine/test_basic_consolidation.py
+++ b/watcher/tests/decision_engine/test_basic_consolidation.py
@@ -127,7 +127,7 @@ class TestBasicConsolidation(base.BaseTestCase):
 
     def test_exception_model(self):
         sercon = BasicConsolidation()
-        self.assertRaises(exception.ClusteStateNotDefined, sercon.execute,
+        self.assertRaises(exception.ClusterStateNotDefined, sercon.execute,
                           None)
 
     def test_exception_cluster_empty(self):
@@ -143,12 +143,12 @@ class TestBasicConsolidation(base.BaseTestCase):
         sercon.ceilometer = MagicMock(
             statistic_aggregation=self.fake_metrics.mock_get_statistics)
 
-        self.assertRaises(exception.ClusteStateNotDefined,
+        self.assertRaises(exception.ClusterStateNotDefined,
                           sercon.calculate_score_vm, "VM_1", None)
 
     def test_print_utilization_raise_cluster_state_not_found(self):
         sercon = BasicConsolidation()
-        self.assertRaises(exception.ClusteStateNotDefined,
+        self.assertRaises(exception.ClusterStateNotDefined,
                           sercon.print_utilization, None)
 
     def test_check_migration(self):