diff --git a/unpacked/jax/output/HTML-CSS/jax.js b/unpacked/jax/output/HTML-CSS/jax.js
index 4c8057381..43bb917e7 100644
--- a/unpacked/jax/output/HTML-CSS/jax.js
+++ b/unpacked/jax/output/HTML-CSS/jax.js
@@ -685,7 +685,7 @@
       //
       var jax = script.MathJax.elementJax, math = jax.root,
           div = jax.HTMLCSS.div, span = jax.HTMLCSS.span;
-      if (!div) return;
+      if (!document.getElementById(span.id)) return;
       //
       //  Set the font metrics
       //