diff --git a/seed/challenges/object-oriented-and-functional-programming.json b/seed/challenges/object-oriented-and-functional-programming.json
index c49dd082d8..77ec8e432d 100644
--- a/seed/challenges/object-oriented-and-functional-programming.json
+++ b/seed/challenges/object-oriented-and-functional-programming.json
@@ -205,7 +205,7 @@
       "title":"Condense arrays with .reduce",
       "difficulty":0,
       "description":[
-        "Reduce can be useful for condensing and array or numbers into one value.",
+        "Reduce can be useful for condensing an array or numbers into one value.",
         "<code>var singleVal = array.reduce(function(previousVal, currentVal){</code>",
         "<code>&thinsp;&thinsp;return(previousVal+currentVal);</code>",
         "<code>});</code>"