diff --git a/challenges/01-front-end-development-certification/html5-and-css.json b/challenges/01-front-end-development-certification/html5-and-css.json
index 2207ee7d55..1ae7be1a24 100644
--- a/challenges/01-front-end-development-certification/html5-and-css.json
+++ b/challenges/01-front-end-development-certification/html5-and-css.json
@@ -4183,7 +4183,7 @@
       "challengeSeed": [
         "<style>",
         "  body {",
-        "    background-color: rgb(0, 0, 0)",
+        "    background-color: rgb(0, 0, 0);",
         "  }",
         "</style>"
       ],
@@ -4224,7 +4224,7 @@
       "challengeSeed": [
         "<style>",
         "  body {",
-        "    background-color: rgb(255, 255, 255)",
+        "    background-color: rgb(255, 255, 255);",
         "  }",
         "</style>"
       ],