diff --git a/awx/api/serializers.py b/awx/api/serializers.py
index 5d9d9c6a7f..ee4625da3e 100644
--- a/awx/api/serializers.py
+++ b/awx/api/serializers.py
@@ -38,9 +38,8 @@ from rest_framework.utils.serializer_helpers import ReturnList
 from polymorphic.models import PolymorphicModel
 
 # AWX
-from awx.main.constants import SCHEDULEABLE_PROVIDERS, ANSI_SGR_PATTERN
+from awx.main.constants import SCHEDULEABLE_PROVIDERS, ANSI_SGR_PATTERN, ACTIVE_STATES, TOKEN_CENSOR
 from awx.main.models import * # noqa
-from awx.main.constants import ACTIVE_STATES, TOKEN_CENSOR
 from awx.main.models.base import NEW_JOB_TYPE_CHOICES
 from awx.main.access import get_user_capabilities
 from awx.main.fields import ImplicitRoleField
diff --git a/awx/main/signals.py b/awx/main/signals.py
index ea4a5ae927..abbe83a27d 100644
--- a/awx/main/signals.py
+++ b/awx/main/signals.py
@@ -31,6 +31,7 @@ import six
 from awx.main.models import * # noqa
 from django.contrib.sessions.models import Session
 from awx.api.serializers import * # noqa
+from awx.main.constants import TOKEN_CENSOR
 from awx.main.utils import model_instance_diff, model_to_dict, camelcase_to_underscore
 from awx.main.utils import ignore_inventory_computed_fields, ignore_inventory_group_removal, _inventory_updates
 from awx.main.tasks import update_inventory_computed_fields
@@ -449,6 +450,8 @@ model_serializer_mapping = {
     WorkflowJobTemplate: WorkflowJobTemplateSerializer,
     WorkflowJobTemplateNode: WorkflowJobTemplateNodeSerializer,
     WorkflowJob: WorkflowJobSerializer,
+    OAuth2AccessToken: OAuth2TokenSerializer,
+    OAuth2Application: OAuth2ApplicationSerializer,
 }
 
 
@@ -468,7 +471,7 @@ def activity_stream_create(sender, instance, created, **kwargs):
             if 'extra_vars' in changes:
                 changes['extra_vars'] = instance.display_extra_vars()
         if type(instance) == OAuth2AccessToken:
-            changes['token'] = '*************'
+            changes['token'] = TOKEN_CENSOR
         activity_entry = ActivityStream(
             operation='create',
             object1=object1,
diff --git a/awx/main/utils/common.py b/awx/main/utils/common.py
index 89511ab4b9..13ff87e956 100644
--- a/awx/main/utils/common.py
+++ b/awx/main/utils/common.py
@@ -383,7 +383,7 @@ def _convert_model_field_for_display(obj, field_name, password_fields=None):
             field_val = json.dumps(field_val, ensure_ascii=False)
         except Exception:
             pass
-    if type(field_val) not in (bool, int, type(None)):
+    if type(field_val) not in (bool, int, type(None), long):
         field_val = smart_str(field_val)
     return field_val
 
@@ -416,10 +416,8 @@ def model_instance_diff(old, new, serializer_mapping=None):
                 _convert_model_field_for_display(old, field, password_fields=old_password_fields),
                 _convert_model_field_for_display(new, field, password_fields=new_password_fields),
             )
-
     if len(diff) == 0:
         diff = None
-
     return diff
 
 
@@ -438,7 +436,6 @@ def model_to_dict(obj, serializer_mapping=None):
         if field.name not in allowed_fields:
             continue
         attr_d[field.name] = _convert_model_field_for_display(obj, field.name, password_fields=password_fields)
-
     return attr_d