JavaScript Basic course - problem with one of the code challenges

Hi

I'm having a problem with one of the code challenges on the Javascript Basics course, specifically question 2 of this challenge Making Decisions with Conditional Statements

https://teamtreehouse.com/library/javascript-basics/making-decisions-with-conditional-statements/introducing-conditional-statements-2

Task 1 asks

"Add a variable named answer and use the prompt() method to ask the question 'What is the best programming language?'"

I wrote the code

var answer = prompt("What is the best programming language?");

Which works and I get the normal "Well done you're doing great" message

Task 2 asks

"Add a conditional statement that opens an alert dialog box with the message "You are correct" when the answer is the string 'JavaScript'."

I wrote the code

var answer = prompt("What is the best programming language?"); if (answer.toUpperCase()==="JAVASCRIPT") { alert("You are correct"); }

I get the prompt which allows me to type "javascript", and an alert message saying "You are correct"

But I get an error message (and so can't progress to Task 3) saying

"Oops! It looks like Task 1 is no longer passing."

Which is kind of weird, because I haven't changed any of the code I wrote for Task 1.

I'm probably doing something wrong which is incredibly silly / basic, but any thoughts would be much appreciated.

thank you