diff --git a/django/contrib/admin/templatetags/admin_modify.py b/django/contrib/admin/templatetags/admin_modify.py
index 7ba7bef74e..55d8bb2b95 100644
--- a/django/contrib/admin/templatetags/admin_modify.py
+++ b/django/contrib/admin/templatetags/admin_modify.py
@@ -195,7 +195,7 @@ def filter_interface_script_maybe(bound_field):
     f = bound_field.field
     if f.rel and isinstance(f.rel, models.ManyToManyRel) and f.rel.filter_interface:
         return '<script type="text/javascript">addEvent(window, "load", function(e) {' \
-              ' SelectFilter.init("id_%s", "%s", %s, "%s"); });</script>\n' % (
+              ' SelectFilter.init("id_%s", %r, %s, "%s"); });</script>\n' % (
               f.name, f.verbose_name, f.rel.filter_interface-1, settings.ADMIN_MEDIA_PREFIX)
     else:
         return ''