diff --git a/packages/readabilityjs/Readability.js b/packages/readabilityjs/Readability.js
index d9c64963a..d5963bc1a 100644
--- a/packages/readabilityjs/Readability.js
+++ b/packages/readabilityjs/Readability.js
@@ -512,15 +512,15 @@ Readability.prototype = {
 
         if (src) {
           const absoluteSrc = this.toAbsoluteURI(src);
-          const parseNumber = (str) => {
+          const attToNumber = (str) => {
             if (!str) { return 0; }
-            const res = parseNumber(str);
+            const res = parseInt(str);
             if (isNaN(res)) { return 0; }
             return res
           }
 
-          const width = parseInt(image.getAttribute('width') || image.style.width);
-          const height = parseInt(image.getAttribute('height') || image.style.height);
+          const width = attToNumber(image.getAttribute('width') || image.style.width);
+          const height = attToNumber(image.getAttribute('height') || image.style.height);
 
           const proxySrc = this.createImageProxyUrl(absoluteSrc, width, height);
           image.setAttribute('src', proxySrc);