diff --git a/neutron/conf/common.py b/neutron/conf/common.py
index 026a21eb6a9..31a719ebc82 100644
--- a/neutron/conf/common.py
+++ b/neutron/conf/common.py
@@ -120,7 +120,7 @@ core_opts = [
     cfg.BoolOpt('filter_validation', default=True,
                 help=_('If True, then allow plugins to decide '
                        'whether to perform validations on filter parameters. '
-                       'Filter validation is enabled if this config'
+                       'Filter validation is enabled if this config '
                        'is turned on and it is supported by all plugins')),
     cfg.IntOpt('global_physnet_mtu', default=constants.DEFAULT_NETWORK_MTU,
                deprecated_name='segment_mtu', deprecated_group='ml2',
diff --git a/neutron/db/agents_db.py b/neutron/db/agents_db.py
index 35e16b6f839..4f555bff90d 100644
--- a/neutron/db/agents_db.py
+++ b/neutron/db/agents_db.py
@@ -542,5 +542,5 @@ class AgentExtRpcCallback(object):
                           "a timestamp: %(agent_time)s. This differs from "
                           "the current server timestamp: %(serv_time)s by "
                           "%(diff)s seconds, which is more than the "
-                          "threshold agent down"
+                          "threshold agent down "
                           "time: %(threshold)s.", log_dict)
diff --git a/neutron/pecan_wsgi/controllers/resource.py b/neutron/pecan_wsgi/controllers/resource.py
index 91e6ef0d06b..827bff31930 100644
--- a/neutron/pecan_wsgi/controllers/resource.py
+++ b/neutron/pecan_wsgi/controllers/resource.py
@@ -88,7 +88,7 @@ class ItemController(utils.NeutronPecanController):
             collection_path)
         if not controller:
             if collection not in self._member_actions:
-                LOG.warning("No controller found for: %s - returning"
+                LOG.warning("No controller found for: %s - returning "
                             "response code 404", collection)
                 pecan.abort(404)
             # collection is a member action, so we create a new controller
diff --git a/neutron/services/logapi/common/exceptions.py b/neutron/services/logapi/common/exceptions.py
index d9dd3813974..1b42218255f 100644
--- a/neutron/services/logapi/common/exceptions.py
+++ b/neutron/services/logapi/common/exceptions.py
@@ -68,7 +68,7 @@ class RouterNotEnabledSnat(n_exc.NeutronException):
 
 
 class EventsDisabled(n_exc.InvalidInput):
-    message = _('List of events %(events)s were disabled for'
+    message = _('List of events %(events)s were disabled for '
                 '%(resource_type)s.')