diff --git a/lib/utils/SchemaManager.js b/lib/utils/SchemaManager.js
index 15d53624..2d1765f0 100644
--- a/lib/utils/SchemaManager.js
+++ b/lib/utils/SchemaManager.js
@@ -101,7 +101,7 @@ export default class SchemaManager {
     for (let tag of tags) {
       tagsMap[tag.name] = {
         description: tag.description,
-        'x-traitTag': tag['x-traitTag']
+        'x-traitTag': tag['x-traitTag'] || false
       };
     }