diff --git a/src/components/ChangeThemeDialog.js b/src/components/ChangeThemeDialog.js
index 37e04ca6629d504d44b870724cad9c1739b0c0ac..e5bb6102de498e007c2feb6130c8f645d3efbe8e 100644
--- a/src/components/ChangeThemeDialog.js
+++ b/src/components/ChangeThemeDialog.js
@@ -32,7 +32,6 @@ export class ChangeThemeDialog extends Component {
   */
   constructor(props) {
     super(props);
-    this.selectedItemRef = React.createRef();
     this.handleThemeChange = this.handleThemeChange.bind(this);
   }