diff --git a/src/core/components/param-body.jsx b/src/core/components/param-body.jsx
index 980ef490..13a4377f 100644
--- a/src/core/components/param-body.jsx
+++ b/src/core/components/param-body.jsx
@@ -47,7 +47,7 @@ export default class ParamBody extends PureComponent {
 
   updateValues = (props) => {
     let { specSelectors, pathMethod, param, isExecute, consumesValue="" } = props
-    let parameter = specSelectors ? specSelectors.getParameter(pathMethod, param.get("name"), param.get("in")) : {}
+    let parameter = specSelectors ? specSelectors.getParameter(pathMethod, param.get("name"), param.get("in")) : fromJS({})
     let isXml = /xml/i.test(consumesValue)
     let isJson = /json/i.test(consumesValue)
     let paramValue = isXml ? parameter.get("value_xml") : parameter.get("value")