diff --git a/src/core/components/parameter-extension.jsx b/src/core/components/parameter-extension.jsx
new file mode 100644
index 00000000..cf1c116f
--- /dev/null
+++ b/src/core/components/parameter-extension.jsx
@@ -0,0 +1,12 @@
+import React from "react"
+import PropTypes from "prop-types"
+
+export const ParameterExt = ({ xKey, xVal }) => {
+    return <div className="parameter__extension">{ xKey }: { String(xVal) }</div>
+}
+ParameterExt.propTypes = {
+  xKey: PropTypes.string,
+  xVal: PropTypes.any
+}
+
+export default ParameterExt
diff --git a/src/core/components/parameter-row.jsx b/src/core/components/parameter-row.jsx
index 71a2765a..a436c527 100644
--- a/src/core/components/parameter-row.jsx
+++ b/src/core/components/parameter-row.jsx
@@ -2,6 +2,7 @@ import React, { Component } from "react"
 import { Map } from "immutable"
 import PropTypes from "prop-types"
 import win from "core/window"
+import { getExtensions } from "core/utils"
 
 export default class ParameterRow extends Component {
   static propTypes = {
@@ -91,6 +92,7 @@ export default class ParameterRow extends Component {
 
     const ModelExample = getComponent("modelExample")
     const Markdown = getComponent("Markdown")
+    const ParameterExt = getComponent("ParameterExt")
 
     let schema = param.get("schema")
     let type = isOAS3 && isOAS3() ? param.getIn(["schema", "type"]) : param.get("type")
@@ -100,6 +102,7 @@ export default class ParameterRow extends Component {
     let itemType = param.getIn(isOAS3 && isOAS3() ? ["schema", "items", "type"] : ["items", "type"])
     let parameter = specSelectors.getParameter(pathMethod, param.get("name"), param.get("in"))
     let value = parameter ? parameter.get("value") : ""
+    let extensions = getExtensions(param)
 
     return (
       <tr>
@@ -113,6 +116,7 @@ export default class ParameterRow extends Component {
             { isOAS3 && isOAS3() && param.get("deprecated") ? "deprecated": null }
           </div>
           <div className="parameter__in">({ param.get("in") })</div>
+          { !extensions.length ? null : extensions.map((v, key) => <ParameterExt key={`${key}-${v}`} xKey={key} xVal={v} /> )}
         </td>
 
         <td className="col parameters-col_description">
diff --git a/src/core/utils.js b/src/core/utils.js
index 6ac9eb29..5f60d8b6 100644
--- a/src/core/utils.js
+++ b/src/core/utils.js
@@ -678,3 +678,5 @@ export function getAcceptControllingResponse(responses) {
 
 export const createDeepLinkPath = (str) => typeof str == "string" || str instanceof String ? str.trim().replace(/\s/g, "_") : ""
 export const escapeDeepLinkPath = (str) => cssEscape( createDeepLinkPath(str) )
+
+export const getExtensions = (defObj) => defObj.filter((v, k) => /^x-/.test(k))
diff --git a/src/style/_table.scss b/src/style/_table.scss
index 02dd92ba..3cbcc81f 100644
--- a/src/style/_table.scss
+++ b/src/style/_table.scss
@@ -131,7 +131,8 @@ table
     }
 }
 
-.parameter__in
+.parameter__in,
+.parameter__extension
 {
     font-size: 12px;
     font-style: italic;