diff --git a/src/components/layers/JSONEditor.jsx b/src/components/layers/JSONEditor.jsx
index 0ed66d35..2f01b824 100644
--- a/src/components/layers/JSONEditor.jsx
+++ b/src/components/layers/JSONEditor.jsx
@@ -29,7 +29,7 @@ class JSONEditor extends React.Component {
     }
   }
 
-  componentDidUpdate(prevProps, prevState) {
+  componentDidUpdate(prevProps) {
     if (prevProps.layer !== this.props.layer) {
       this.setState({
         code: JSON.stringify(this.props.layer, null, 2)