diff --git a/lib/utils/helpers.js b/lib/utils/helpers.js
index <HASH>..<HASH> 100755
--- a/lib/utils/helpers.js
+++ b/lib/utils/helpers.js
@@ -1,4 +1,4 @@
-exports.uniqueName = name => name.toLowerCase();
+exports.uniqueName = name => name.toString().toLowerCase();
 exports.isString = value => typeof value === 'string';
 exports.isObject = value => typeof value === 'object';
 exports.isArray = value => value instanceof Array;
Fix: convert name to string before lowercasing it (#<I>)