diff --git a/challenges/01-front-end-development-certification/basic-javascript.json b/challenges/01-front-end-development-certification/basic-javascript.json
index 0541df41456..79b39e18903 100644
--- a/challenges/01-front-end-development-certification/basic-javascript.json
+++ b/challenges/01-front-end-development-certification/basic-javascript.json
@@ -4197,7 +4197,7 @@
"var ourDog = {\n \"name\": \"Camper\",\n \"legs\": 4,\n \"tails\": 1,\n \"friends\": [\"everything!\"],\n \"bark\": \"bow-wow\"\n};\nvar myDog = {\n \"name\": \"Happy Coder\",\n \"legs\": 4,\n \"tails\": 1,\n \"friends\": [\"Free Code Camp Campers\"],\n \"bark\": \"woof\"\n};\ndelete myDog.tails;"
],
"tests": [
- "assert(myDog.tails === undefined, 'message: Delete the property \"tails\"
from myDog
.');",
+ "assert(typeof myDog === \"object\" && myDog.tails === undefined, 'message: Delete the property \"tails\"
from myDog
.');",
"assert(code.match(/\"tails\": 1/g).length > 1, 'message: Do not modify the myDog
setup');"
],
"type": "waypoint",