diff --git a/seed/challenges/html5-and-css.json b/seed/challenges/html5-and-css.json
index 7bdce36cdb..1bf7c3d1ba 100644
--- a/seed/challenges/html5-and-css.json
+++ b/seed/challenges/html5-and-css.json
@@ -3431,7 +3431,7 @@
       "description": [
         "Did you know there are other ways to represent colors in CSS? One of these ways is called hexadecimal code, or <code>hex code</code> for short.",
         "<code>Decimal</code> means the numbers zero through nine - the numbers that people use in everyday life. <code>Hexadecimal</code> includes these 10 numbers, plus the letters A, B, C, D, E and F. This means that Hexidecimal has a total of 16 possible values, instead of the 10 possible values that our normal base-10 number system gives us.",
-        "With CSS, we use 6 hexidecimal number to represent colors. For example, <code>#000000</code> is the lowest possible value, and it represents the color black.",
+        "With CSS, we use 6 hexadecimal numbers to represent colors. For example, <code>#000000</code> is the lowest possible value, and it represents the color black.",
         "Replace the word <code>black</code> in our <code>body</code> element's background-color with its <code>hex code</code> representation, <code>#000000</code>. "
       ],
       "tests": [