diff --git a/unpacked/jax/output/HTML-CSS/autoload/mglyph.js b/unpacked/jax/output/HTML-CSS/autoload/mglyph.js
index c93f0acd4..a4ae0bb7d 100644
--- a/unpacked/jax/output/HTML-CSS/autoload/mglyph.js
+++ b/unpacked/jax/output/HTML-CSS/autoload/mglyph.js
@@ -68,7 +68,7 @@ MathJax.Hub.Register.StartupHook("HTML-CSS Jax Ready",function () {
           this.Append(err); err.toHTML(span); this.data.pop();
           span.bbox = err.HTMLspanElement().bbox;
         } else {
-          var mu = this.HTMLgetMu(span);
+          var mu = this.HTMLgetMu(span), size;
           img = HTMLCSS.addElement(span,"img",{isMathJax:true, src:values.src, alt:values.alt, title:values.alt});
           if (values.width)  {
             img.style.width = HTMLCSS.Em(HTMLCSS.length2em(values.width,mu,this.img.img.width/HTMLCSS.em));
diff --git a/unpacked/jax/output/HTML-CSS/jax.js b/unpacked/jax/output/HTML-CSS/jax.js
index f24706641..e0d9614ea 100644
--- a/unpacked/jax/output/HTML-CSS/jax.js
+++ b/unpacked/jax/output/HTML-CSS/jax.js
@@ -972,7 +972,7 @@
       if (unit === "cm") {return m * this.pxPerInch * emFactor / 2.54} // 2.54 cm to an inch
       if (unit === "mm") {return m * this.pxPerInch * emFactor / 25.4} // 10 mm to a cm
       if (unit === "mu") {return m / 18 * factor * mu} // 18mu to an em for the scriptlevel
-      return m*factor*size;  // relative to given size (or 1em as default)
+      return m*size;  // relative to given size (or 1em as default)
     },
     thickness2em: function (length,mu) {
       var thick = HTMLCSS.TeX.rule_thickness;