diff --git a/unpacked/jax/output/HTML-CSS/jax.js b/unpacked/jax/output/HTML-CSS/jax.js
index d9dacc284..079e0865e 100644
--- a/unpacked/jax/output/HTML-CSS/jax.js
+++ b/unpacked/jax/output/HTML-CSS/jax.js
@@ -578,7 +578,7 @@
         //  Remove any existing output
         //
         prev = script.previousSibling;
-        if (prev && String(prev.className).match(/^MathJax(_Display)?( MathJax_Processing)?$/))
+        if (prev && String(prev.className).match(/^MathJax(_Display)?( MathJax_Process(ing|ed))?$/))
           {prev.parentNode.removeChild(prev)}
         if (script.MathJax.preview) script.MathJax.preview.style.display = "none";
         //