diff --git a/aodh/evaluator/composite.py b/aodh/evaluator/composite.py
index f7f140078..a780c8dd0 100644
--- a/aodh/evaluator/composite.py
+++ b/aodh/evaluator/composite.py
@@ -18,7 +18,6 @@ import stevedore
 
 from aodh import evaluator
 from aodh.evaluator import threshold
-from aodh.i18n import _
 
 LOG = log.getLogger(__name__)
 
@@ -177,14 +176,14 @@ class CompositeEvaluator(evaluator.Evaluator):
                   'rules': ', '.join(sorted(root_cause_rules)),
                   'description': STATE_CHANGE[new_state]}
         if transition:
-            reason = (_('Composite rule alarm with composition form: '
-                        '%(expression)s transition to %(state)s, due to '
-                        'rules: %(rules)s %(description)s') % params)
+            reason = (('Composite rule alarm with composition form: '
+                       '%(expression)s transition to %(state)s, due to '
+                       'rules: %(rules)s %(description)s') % params)
 
         else:
-            reason = (_('Composite rule alarm with composition form: '
-                        '%(expression)s remaining as %(state)s, due to '
-                        'rules: %(rules)s %(description)s') % params)
+            reason = (('Composite rule alarm with composition form: '
+                       '%(expression)s remaining as %(state)s, due to '
+                       'rules: %(rules)s %(description)s') % params)
 
         return reason, reason_data
 
diff --git a/aodh/evaluator/event.py b/aodh/evaluator/event.py
index d90130ca9..0ba95f28c 100644
--- a/aodh/evaluator/event.py
+++ b/aodh/evaluator/event.py
@@ -22,7 +22,6 @@ from oslo_utils import timeutils
 import six
 
 from aodh import evaluator
-from aodh.i18n import _
 
 LOG = log.getLogger(__name__)
 
@@ -248,8 +247,8 @@ class EventAlarmEvaluator(evaluator.Evaluator):
         """Update alarm state and fire alarm via alarm notifier."""
 
         state = evaluator.ALARM
-        reason = (_('Event <id=%(id)s,event_type=%(event_type)s> hits the '
-                    'query <query=%(alarm_query)s>.') %
+        reason = (('Event <id=%(id)s,event_type=%(event_type)s> hits the '
+                   'query <query=%(alarm_query)s>.') %
                   {'id': event.id,
                    'event_type': event.get_value('event_type'),
                    'alarm_query': json.dumps(alarm.obj.rule['query'],