diff --git a/flavors/swagger-ui-react/index.jsx b/flavors/swagger-ui-react/index.jsx
index ce3be7a9feb..05a1aab86df 100644
--- a/flavors/swagger-ui-react/index.jsx
+++ b/flavors/swagger-ui-react/index.jsx
@@ -124,7 +124,7 @@ SwaggerUI.propTypes = {
 }
 
 SwaggerUI.defaultProps = {
-  spec: {},
+  spec: "",
   url: "",
   layout: "BaseLayout",
   requestInterceptor: req => req,