diff --git a/apiserver/apiserver/api/signals.py b/apiserver/apiserver/api/signals.py
index 815d5b8..6ee2163 100644
--- a/apiserver/apiserver/api/signals.py
+++ b/apiserver/apiserver/api/signals.py
@@ -11,7 +11,7 @@ from . import models
 from .permissions import is_admin_director
 
 def get_object_owner(obj):
-    full_name = lambda member: member.first_name + ' ' + member.last_name
+    full_name = lambda member: member.preferred_name + ' ' + member.last_name
 
     if obj.__class__.__name__ == 'Member':
         return full_name(obj), obj.id
diff --git a/apiserver/apiserver/api/views.py b/apiserver/apiserver/api/views.py
index f245073..04aa1b4 100644
--- a/apiserver/apiserver/api/views.py
+++ b/apiserver/apiserver/api/views.py
@@ -570,7 +570,7 @@ class LockoutViewSet(viewsets.ViewSet, List):
 
             authorization = {}
             authorization['id'] = member.id
-            authorization['name'] = member.first_name + ' ' + member.last_name
+            authorization['name'] = member.preferred_name + ' ' + member.last_name
             authorization['common'] = bool(member.orientation_date or member.vetted_date)
             authorization['lathe'] = bool(member.lathe_cert_date) and authorization['common']
             authorization['mill'] = bool(member.mill_cert_date) and authorization['common']