diff --git a/challenges/html5-and-css.json b/challenges/html5-and-css.json
index 52a12506ab..3e3c6ecec7 100644
--- a/challenges/html5-and-css.json
+++ b/challenges/html5-and-css.json
@@ -904,7 +904,7 @@
       "tests": [
         "assert($(\"img\").hasClass(\"smaller-image\"), 'Your <code>img</code> element should have the class <code>smaller-image</code>.')",
         "assert($(\"img\").hasClass(\"thick-green-border\"), 'Your <code>img</code> element should have the class <code>thick-green-border</code>.')",
-        "assert($(\"img\").hasClass(\"thick-green-border\") && parseInt($(\"img\").css(\"border-top-width\"), 10) === 10, 'Give your image a border width of <code>10px</code>.')",
+        "assert($(\"img\").hasClass(\"thick-green-border\") && parseInt($(\"img\").css(\"border-top-width\"), 10) >= 8 && parseInt($(\"img\").css(\"border-top-width\"), 10) <= 12, 'Give your image a border width of <code>10px</code>.')",
         "assert($(\"img\").css(\"border-right-style\") === \"solid\", 'Give your image a border style of <code>solid</code>.')",
         "assert($(\"img\").css(\"border-left-color\") === \"rgb(0, 128, 0)\", 'The border around your <code>img</code> element should be green.')"
       ],