diff --git a/docs/formatnwfilter.html.in b/docs/formatnwfilter.html.in
index 4a60e2ea9adf8ea855aa0efd838121092bcb0d0b..d1e5d31dff885cf17accf735bab20aa39a7f1a61 100644
--- a/docs/formatnwfilter.html.in
+++ b/docs/formatnwfilter.html.in
@@ -1781,7 +1781,7 @@
 
     <h5><a name="nwfelemsRulesProtoMiscv6">IGMP, ESP, AH, UDPLITE, 'ALL' over IPv6</a></h5>
     <p>
-      Protocol ID: <code>igmp-ipv6</code>, <code>esp-ipv6</code>, <code>ah-ipv6</code>, <code>udplite-ipv6</code>, <code>all-ipv6</code>
+      Protocol ID: <code>esp-ipv6</code>, <code>ah-ipv6</code>, <code>udplite-ipv6</code>, <code>all-ipv6</code>
       <br/>
       Note: The chain parameter is ignored for this type of traffic
       and should either be omitted or set to <code>root</code>.