diff --git a/sync/admin.py b/sync/admin.py
index 263d9cb..48b3ee0 100644
--- a/sync/admin.py
+++ b/sync/admin.py
@@ -6,6 +6,7 @@ from .models import BaseModel, ModelLog, DataAccess
 class SyncedObjectAdmin(admin.ModelAdmin):
 
     exclude = ('data_access_ids',)
+    raw_id_fields = ['related_user']
 
     def save_model(self, request, obj, form, change):
         if isinstance(obj, BaseModel):