diff --git a/src/components/parameters-editor.js b/src/components/parameters-editor.js
index 09beb96..9f17e7e 100644
--- a/src/components/parameters-editor.js
+++ b/src/components/parameters-editor.js
@@ -68,7 +68,7 @@ class ParametersEditor extends React.Component {
     }
 }
 
-ParametersEditor.PropTypes = {
+ParametersEditor.propTypes = {
     content: PropTypes.object,
     onChange: PropTypes.func,
     disabled: PropTypes.bool