diff --git a/packages/bbob-plugin-helper/src/index.js b/packages/bbob-plugin-helper/src/index.js
index 5da62b8..d9db9aa 100644
--- a/packages/bbob-plugin-helper/src/index.js
+++ b/packages/bbob-plugin-helper/src/index.js
@@ -52,10 +52,16 @@ const attrValue = (name, value) => {
  * Transforms attrs to html params string
  * @param values
  */
-const attrsToString = values =>
-  Object.keys(values)
+const attrsToString = (values) => {
+  // To avoid some malformed attributes
+  if (typeof values === 'undefined') {
+    return '';
+  }
+
+  return Object.keys(values)
     .reduce((arr, key) => [...arr, attrValue(key, values[key])], [''])
     .join(' ');
+};
 
 export {
   attrsToString,
diff --git a/packages/bbob-plugin-helper/test/index.test.js b/packages/bbob-plugin-helper/test/index.test.js
index 4f4fde1..59f2dfd 100644
--- a/packages/bbob-plugin-helper/test/index.test.js
+++ b/packages/bbob-plugin-helper/test/index.test.js
@@ -79,4 +79,8 @@ describe('@bbob/plugin-helper', () => {
       disabled: true
     })).toBe(` tag="test" foo="bar" disabled`)
   })
+  
+  test('attrsToString undefined', () => {
+    expect(attrsToString(undefined)).toBe('')
+  })  
 });