diff --git a/docs/schemas/nwfilter.rng b/docs/schemas/nwfilter.rng
index bc473919c4..61e9ed818d 100644
--- a/docs/schemas/nwfilter.rng
+++ b/docs/schemas/nwfilter.rng
@@ -866,6 +866,8 @@
       <value>drop</value>
       <value>accept</value>
       <value>reject</value>
+      <value>continue</value>
+      <value>return</value>
     </choice>
   </define>