diff --git a/challenges/02-javascript-algorithms-and-data-structures/basic-data-structures.json b/challenges/02-javascript-algorithms-and-data-structures/basic-data-structures.json
index 99e931b68a..16fdc1afff 100644
--- a/challenges/02-javascript-algorithms-and-data-structures/basic-data-structures.json
+++ b/challenges/02-javascript-algorithms-and-data-structures/basic-data-structures.json
@@ -117,7 +117,7 @@
         "<blockquote>let twentyThree = 'XXIII';<br>let romanNumerals = ['XXI', 'XXII'];<br><br>romanNumerals.unshift('XIX', 'XX');<br>// now equals ['XIX', 'XX', 'XXI', 'XXII']<br><br>romanNumerals.push(twentyThree);<br>// now equals ['XIX', 'XX', 'XXI', 'XXII', 'XXIII']",
         "Notice that we can also pass variables, which allows us even greater flexibility in dynamically modifying our array's data.",
         "<hr>",
-        "We have defined a function, <code>mixedNumbers</code>, which we are passing an array as an argument. Modify the function by using <code>push()</code> and <code>shift()</code> to add <code>'I', 2, 'three'</code>, to the beginning of the array and <code>7, 'VIII', '9'</code> to the end so that the returned array contains representations of the numbers 1-9 in order."
+        "We have defined a function, <code>mixedNumbers</code>, which we are passing an array as an argument. Modify the function by using <code>push()</code> and <code>unshift()</code> to add <code>'I', 2, 'three'</code> to the beginning of the array and <code>7, 'VIII', '9'</code> to the end so that the returned array contains representations of the numbers 1-9 in order."
       ],
       "challengeSeed": [
         "function mixedNumbers(arr) {",