diff --git a/challenges/01-responsive-web-design/applied-visual-design.json b/challenges/01-responsive-web-design/applied-visual-design.json
index 5533db55bd0..c8dd92e7de2 100644
--- a/challenges/01-responsive-web-design/applied-visual-design.json
+++ b/challenges/01-responsive-web-design/applied-visual-design.json
@@ -2307,7 +2307,7 @@
           "text":
             "Your <code>body</code> element should have a <code>background</code> property set to a <code>url()</code> with the given link.",
           "testString":
-            "assert(code.match(/background:\\s*?url\\((\"|')https:\\/\\/i\\.imgur\\.com\\/MJAkxbh\\.png(\"|')\\)/gi), 'Your <code>body</code> element should have a <code>background</code> property set to a <code>url()</code> with the given link.');"
+            "assert(code.match(/background:\\s*?url\\(\\s*(\"|'|)https:\\/\\/i\\.imgur\\.com\\/MJAkxbh\\.png\\1\\s*\\)/gi), 'Your <code>body</code> element should have a <code>background</code> property set to a <code>url()</code> with the given link.');"
         }
       ],
       "solutions": [],