diff --git a/challenges/08-coding-interview-questions-and-take-home-assignments/project-euler-problems.json b/challenges/08-coding-interview-questions-and-take-home-assignments/project-euler-problems.json
index ba4e6083ae..8bedba0816 100644
--- a/challenges/08-coding-interview-questions-and-take-home-assignments/project-euler-problems.json
+++ b/challenges/08-coding-interview-questions-and-take-home-assignments/project-euler-problems.json
@@ -984,24 +984,27 @@
       "type": "bonfire",
       "title": "Problem 31: Coin sums",
       "tests": [
-        "assert.strictEqual(euler31(), 73682, 'message: <code>euler31()</code> should return 73682.');"
+        "assert(coinSums(50) == 451, 'message: <code>coinSums(50)</code> should return 451.');",
+        "assert(coinSums(100) == 4563, 'message: <code>coinSums(100)</code> should return 4563.');",
+        "assert(coinSums(150) == 21873, 'message: <code>coinSums(150)</code> should return 21873.');",
+        "assert(coinSums(200) == 73682, 'message: <code>coinSums(200)</code> should return 73682.');"
       ],
       "solutions": [],
       "translations": {},
       "challengeSeed": [
-        "function euler31() {",
+        "function coinSums(n) {",
         "  // Good luck!",
-        "  return true;",
+        "  return n;",
         "}",
         "",
-        "euler31();"
+        "coinSums(200);"
       ],
       "description": [
         "In England the currency is made up of pound, £, and pence, p, and there are eight coins in general circulation:",
         "1p, 2p, 5p, 10p, 20p, 50p, £1 (100p) and £2 (200p).",
         "It is possible to make £2 in the following way:",
         "1×£1 + 1×50p + 2×20p + 1×5p + 1×2p + 3×1p",
-        "How many different ways can £2 be made using any number of coins?"
+        "How many different ways can £(n) be made using any number of coins?"
       ]
     },
     {