diff --git a/.eslintrc b/.eslintrc
index 796fc4a1..8a282503 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -12,7 +12,7 @@
     "rules": {
         "array-bracket-spacing": "off",
         "complexity": "off",
-        "func-style": "warn",
+        "func-style": ["error", "declaration"],
         "no-magic-numbers": "off",
         "max-lines": "warn",
         "max-lines-per-function": "warn",
@@ -105,6 +105,7 @@
                     "allowKeywords": true,
                     "allowPattern": "throws"
                 }],
+                "func-style": "off",
                 "id-length": "off",
                 "max-len": "off",
                 "max-lines-per-function": "off",
diff --git a/index.js b/index.js
index efd4bb3f..82f94ad8 100644
--- a/index.js
+++ b/index.js
@@ -24,10 +24,10 @@ module.exports = (function () {
 		return harness;
 	}
 
-	var lazyLoad = function () {
+	function lazyLoad() {
 		// eslint-disable-next-line no-invalid-this
 		return getHarness().apply(this, arguments);
-	};
+	}
 
 	lazyLoad.wait = function () {
 		wait = true;
@@ -72,7 +72,7 @@ function createHarness(conf_) {
 		results.once('done', function () { results.close(); });
 	}
 
-	var test = function (name, conf, cb) {
+	function test(name, conf, cb) {
 		var t = new Test(name, conf, cb);
 		test._tests.push(t);
 
@@ -87,7 +87,7 @@ function createHarness(conf_) {
 
 		results.push(t);
 		return t;
-	};
+	}
 	test._results = results;
 
 	test._tests = [];
diff --git a/lib/results.js b/lib/results.js
index 97a731fc..5c6440b1 100644
--- a/lib/results.js
+++ b/lib/results.js
@@ -180,7 +180,8 @@ Results.prototype.only = function (t) {
 
 Results.prototype._watch = function (t) {
 	var self = this;
-	var write = function (s) { self._stream.queue(s); };
+	function write(s) { self._stream.queue(s); }
+
 	t.once('prerun', function () {
 		var premsg = '';
 		if (t._skip) {
@@ -214,7 +215,8 @@ Results.prototype.close = function () {
 	var self = this;
 	if (self.closed) { self._stream.emit('error', new Error('ALREADY CLOSED')); }
 	self.closed = true;
-	var write = function (s) { self._stream.queue(s); };
+
+	function write(s) { self._stream.queue(s); }
 
 	write('\n1..' + self.count + '\n');
 	write('# tests ' + self.count + '\n');
diff --git a/lib/test.js b/lib/test.js
index 99225dca..d2b19806 100644
--- a/lib/test.js
+++ b/lib/test.js
@@ -33,7 +33,7 @@ var safeSetTimeout = setTimeout;
 var safeClearTimeout = clearTimeout;
 
 // eslint-disable-next-line no-unused-vars
-var getTestArgs = function (name_, opts_, cb_) {
+function getTestArgs(name_, opts_, cb_) {
 	var name = '(anonymous)';
 	var opts = {};
 	var cb;
@@ -54,7 +54,7 @@ var getTestArgs = function (name_, opts_, cb_) {
 		opts: opts,
 		cb: cb
 	};
-};
+}
 
 function Test(name_, opts_, cb_) {
 	if (!(this instanceof Test)) {
@@ -427,7 +427,7 @@ Test.prototype.skip = function skip(msg, extra) {
 	});
 };
 
-var testAssert = function assert(value, msg, extra) {
+var testAssert = function assert(value, msg, extra) { // eslint-disable-line func-style
 	this._assert(value, {
 		message: defined(msg, 'should be truthy'),
 		operator: 'ok',