diff --git a/lib/helpers.js b/lib/helpers.js
index 7560974e16..d4eb233f22 100644
--- a/lib/helpers.js
+++ b/lib/helpers.js
@@ -41,7 +41,9 @@ function schemaToObject (schema, id, version, location) {
           child[key] = prop.default || [];
           break;
         case "object":
-          child[key] = walkObject(prop.properties);
+          var nestedProps = prop.properties;
+
+          child[key] = nestedProps ? walkObject(nestedProps) : prop.default || {};
           break;
         default:
           break;