diff --git a/tex4ht.usr b/tex4ht.usr
index 240c612..59d2602 100644
--- a/tex4ht.usr
+++ b/tex4ht.usr
@@ -16,4 +16,6 @@
 
 \:CheckOption{monolith} \if:Option
    \newcommand{\monolith}{\Configure{@BODY}{\startmymenu\selectmonolith\finishmymenu\HCode{</nav></div></footer>}}}
+ \else
+   \newcommand{\monolith}{}
  \fi