diff --git a/unpacked/jax/output/SVG/autoload/multiline.js b/unpacked/jax/output/SVG/autoload/multiline.js
index 55a244993..f3cf5b8e8 100644
--- a/unpacked/jax/output/SVG/autoload/multiline.js
+++ b/unpacked/jax/output/SVG/autoload/multiline.js
@@ -504,7 +504,8 @@ MathJax.Hub.Register.StartupHook("SVG Jax Ready",function () {
       //
       //  Get the default penalty for this location
       //
-      var W = info.scanW, mo = (info.embellished||this); delete info.embellished;
+      var W = info.scanW, mo = info.embellished; delete info.embellished;
+      if (!mo || !mo.SVGdata) {mo = this}
       var svg = mo.SVGdata, w = svg.w + svg.x;
       if (values.linebreakstyle === MML.LINEBREAKSTYLE.AFTER) {W += w; w = 0}
       if (W - info.shift === 0) {return false} // don't break at zero width (FIXME?)