diff --git a/src/core/components/content-type.jsx b/src/core/components/content-type.jsx
index 4a5e7349..6f81f671 100644
--- a/src/core/components/content-type.jsx
+++ b/src/core/components/content-type.jsx
@@ -37,7 +37,7 @@ export default class ContentType extends React.Component {
 
     return (
       <div className={ "content-type-wrapper " + ( className || "" ) }>
-        <select className="content-type" value={value} onChange={this.onChangeWrapper} >
+        <select className="content-type" value={value || ""} onChange={this.onChangeWrapper} >
           { contentTypes.map( (val) => {
             return <option key={ val } value={ val }>{ val }</option>
           }).toArray()}
diff --git a/src/core/plugins/oas3/components/request-body.jsx b/src/core/plugins/oas3/components/request-body.jsx
index 7094e068..5b20a50c 100644
--- a/src/core/plugins/oas3/components/request-body.jsx
+++ b/src/core/plugins/oas3/components/request-body.jsx
@@ -50,7 +50,7 @@ RequestBody.propTypes = {
   getComponent: PropTypes.func.isRequired,
   getConfigs: PropTypes.func.isRequired,
   specSelectors: PropTypes.object.isRequired,
-  contentType: PropTypes.string.isRequired,
+  contentType: PropTypes.string,
   isExecute: PropTypes.bool.isRequired,
   onChange: PropTypes.func.isRequired
 }
diff --git a/src/core/plugins/oas3/wrap-components/parameters.jsx b/src/core/plugins/oas3/wrap-components/parameters.jsx
index a825f530..ac61e90f 100644
--- a/src/core/plugins/oas3/wrap-components/parameters.jsx
+++ b/src/core/plugins/oas3/wrap-components/parameters.jsx
@@ -22,6 +22,7 @@ class Parameters extends Component {
     specActions: PropTypes.object.isRequired,
     operation: PropTypes.object.isRequired,
     getComponent: PropTypes.func.isRequired,
+    getConfigs: PropTypes.func.isRequired,
     specSelectors: PropTypes.object.isRequired,
     oas3Actions: PropTypes.object.isRequired,
     oas3Selectors: PropTypes.object.isRequired,
@@ -86,6 +87,7 @@ class Parameters extends Component {
 
       fn,
       getComponent,
+      getConfigs,
       specSelectors,
       oas3Actions,
       oas3Selectors,
@@ -137,6 +139,7 @@ class Parameters extends Component {
                     eachMap(parameters, (parameter) => (
                       <ParameterRow fn={ fn }
                         getComponent={ getComponent }
+                        getConfigs={ getConfigs }
                         param={ parameter }
                         key={ parameter.get( "name" ) }
                         onChange={ this.onChange }