diff --git a/invitations/admin.py b/invitations/admin.py
index 5235a96..b5ccec6 100644
--- a/invitations/admin.py
+++ b/invitations/admin.py
@@ -10,6 +10,7 @@
 
 class InvitationAdmin(admin.ModelAdmin):
     list_display = ('email', 'sent', 'accepted')
+    raw_id_fields = ("inviter",)
 
     def get_form(self, request, obj=None, **kwargs):
         if obj: