diff --git a/lib/middleware/check-progress.js b/lib/middleware/check-progress.js
index 70ed83c..b993e52 100644
--- a/lib/middleware/check-progress.js
+++ b/lib/middleware/check-progress.js
@@ -99,7 +99,7 @@ module.exports = (route, controller, steps, start) => {
     if (visited.length || !prereqs.length || route === start) {
       next();
     } else {
-      const err = new Error('Missing prerequisite');
+      const err = new Error('Attempt to access page without prerequisite steps being completed');
       err.code = 'MISSING_PREREQ';
       next(err);
     }
diff --git a/package.json b/package.json
index 29c2dfd..761f2b0 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
     "test:lint": "eslint .",
     "test:unit": "istanbul cover _mocha -- --recursive --require test/helpers",
     "test:check-coverage": "istanbul check-coverage --statement 85.53 --branch 81.58 --function 66.67 --line 86.21",
-    "test:functional": "funkie mocha ./functional-tests --opts ./functional-tests/mocha.opts",
+    "test:functional": "funkie mocha ./functional-tests --opts ./functional-tests/mocha.opts --exit",
     "test:snyk": "snyk test --dev",
     "snyk-protect": "snyk protect",
     "prepublish": "npm run snyk-protect",
@@ -51,7 +51,7 @@
     "hof-util-autofill": "^1.0.2",
     "hogan-express-strict": "^0.5.4",
     "istanbul": "^0.4.3",
-    "mocha": "^3.1.2",
+    "mocha": "^5.2.0",
     "mocha-sandbox": "^1.0.0",
     "reqres": "^1.2.0",
     "sinon": "^1.17.6",