diff --git a/django/contrib/admin/templatetags/admin_list.py b/django/contrib/admin/templatetags/admin_list.py
index 93e9b0799b..37cdb91c3c 100644
--- a/django/contrib/admin/templatetags/admin_list.py
+++ b/django/contrib/admin/templatetags/admin_list.py
@@ -222,7 +222,8 @@ def items_for_result(cl, result):
                 attr = str(cl.to_field)
             else:
                 attr = pk
-            result_id = repr(force_unicode(getattr(result, attr)))[1:]
+            value = result.serializable_value(attr)
+            result_id = repr(force_unicode(value))[1:]
             yield mark_safe(u'<%s%s><a href="%s"%s>%s</a></%s>' % \
                 (table_tag, row_class, url, (cl.is_popup and ' onclick="opener.dismissRelatedLookupPopup(window, %s); return false;"' % result_id or ''), conditional_escape(result_repr), table_tag))
         else: