diff --git a/seed/challenges/object-oriented-and-functional-programming.json b/seed/challenges/object-oriented-and-functional-programming.json
index 2d8c22f32d..2da91ee5a6 100644
--- a/seed/challenges/object-oriented-and-functional-programming.json
+++ b/seed/challenges/object-oriented-and-functional-programming.json
@@ -212,7 +212,7 @@
         "<code>});</code>"
       ],
       "tests":[
-        "assert(singleVal == 30, 'message: <code>singleVal</code> should have been set to the result of you reduce operation.');",
+        "assert(singleVal == 30, 'message: <code>singleVal</code> should have been set to the result of your reduce operation.');",
         "assert(editor.getValue().match(/\\.reduce\\(/gi), 'message: You should have made use of the reduce method.');"
       ],
       "challengeSeed":[