diff --git a/seed/challenges/01-front-end-development-certification/html5-and-css.json b/seed/challenges/01-front-end-development-certification/html5-and-css.json
index 7ba4020dea..ff20498cb1 100644
--- a/seed/challenges/01-front-end-development-certification/html5-and-css.json
+++ b/seed/challenges/01-front-end-development-certification/html5-and-css.json
@@ -3830,7 +3830,8 @@
       ],
       "tests": [
         "assert($(\"body\").css(\"background-color\") === \"rgb(0, 0, 0)\", 'message: Give your <code>body</code> element the <code>background-color</code> of black.');",
-        "assert(code.match(/<style>\\s*body\\s*\\{\\s*background.*\\s*:\\s*.*;?\\s*\\}\\s*<\\/style>/i), 'message: Make sure your CSS rule is properly formatted with both opening and closing curly brackets.');"
+        "assert(code.match(/<style>\\s*body\\s*\\{\\s*background.*\\s*:\\s*.*;\\s*\\}\\s*<\\/style>/i), 'message: Make sure your CSS rule is properly formatted with both opening and closing curly brackets.');",
+        "assert(code.match(/<style>\\s*body\\s*\\{\\s*background.*\\s*:\\s*.*;\\s*\\}\\s*<\\/style>/i), 'message: Make sure your CSS rule ends with a semi-colon.');"
       ],
       "descriptionPtBR": [
         "Agora vamos recomeçar e falar sobre herança em CSS.",