diff --git a/seed/challenges/html5-and-css.json b/seed/challenges/html5-and-css.json
index 710f8b441a..586c789a88 100644
--- a/seed/challenges/html5-and-css.json
+++ b/seed/challenges/html5-and-css.json
@@ -3235,7 +3235,8 @@
         "Our \"pink-text\" class overrode our <code>body</code> element's CSS declaration!",
         "We just proved that our classes will override the <code>body</code> element's CSS. So the next logical question is, what can we do to override our <code>pink-text</code> class?",
         "Create an additional CSS class called <code>blue-text</code> that gives an element the color blue. Make sure it's below your <code>pink-text</code> class declaration.",
-        "Apply the <code>blue-text</code> class to your <code>h1</code> element in addition to your <code>pink-text</code> class, and let's see which one wins."
+        "Apply the <code>blue-text</code> class to your <code>h1</code> element in addition to your <code>pink-text</code> class, and let's see which one wins.",
+        "Applying multiple class attributes to a HTML element is done with a space between them like this: <code>class=\"class1 class2\"</code>"
       ],
       "tests": [
         "assert($(\"h1\").hasClass(\"pink-text\"), 'Your <code>h1</code> element should have the class <code>pink-text</code>.')",