diff --git a/public/src/utils.js b/public/src/utils.js
index e3d76f0878..b647356308 100644
--- a/public/src/utils.js
+++ b/public/src/utils.js
@@ -351,7 +351,7 @@
 			if (!str) {
 				return '';
 			}
-			str = str.replace(utils.trimRegex, '');
+			str = String(str).replace(utils.trimRegex, '');
 			if (utils.isLatin.test(str)) {
 				str = str.replace(utils.invalidLatinChars, '-');
 			} else {
diff --git a/test/utils.js b/test/utils.js
index 3d6e01606f..7ba317d0f2 100644
--- a/test/utils.js
+++ b/test/utils.js
@@ -46,6 +46,12 @@ describe('Utility Methods', function () {
 		done();
 	});
 
+	it('should work if a number is passed in', function (done) {
+		var slug = utils.slugify(12345);
+		assert.strictEqual(slug, '12345');
+		done();
+	});
+
 	describe('username validation', function () {
 		it('accepts latin-1 characters', function () {
 			var username = "John\"'-. Doeäâèéë1234";