diff --git a/dotfiles/commonfunc b/dotfiles/commonfunc
index d3b8520..b4702bd 100644
--- a/dotfiles/commonfunc
+++ b/dotfiles/commonfunc
@@ -205,6 +205,7 @@ confv6::unset() {
   unset address
   unset prefixlength
   unset router
+  unset help
   return
 }