diff --git a/seed/challenges/intermediate-bonfires.json b/seed/challenges/intermediate-bonfires.json
index 10c1c35bcf..e4811bcb1c 100644
--- a/seed/challenges/intermediate-bonfires.json
+++ b/seed/challenges/intermediate-bonfires.json
@@ -71,10 +71,10 @@
       ],
       "MDNlinks": [
         "Comparison Operators",
-        "String.slice()",
+        "Array.slice()",
         "Array.filter()",
         "Array.indexOf()",
-        "String.concat()"
+        "Array.concat()"
       ],
       "type": "bonfire",
       "challengeType": 5,