diff --git a/public/app/plugins/panel/piechart/PiechartOptionsBox.tsx b/public/app/plugins/panel/piechart/PiechartOptionsBox.tsx
index e5979e76be9..aadcc3edf77 100644
--- a/public/app/plugins/panel/piechart/PiechartOptionsBox.tsx
+++ b/public/app/plugins/panel/piechart/PiechartOptionsBox.tsx
@@ -17,7 +17,8 @@ const piechartOptions = [{ value: PiechartType.PIE, label: 'Pie' }, { value: Pie
 
 export class PiechartOptionsBox extends PureComponent<PanelEditorProps<PiechartOptions>> {
   onPieTypeChange = ({ target }) => this.props.onOptionsChange({ ...this.props.options, pieType: target.value });
-  onStrokeWidthChange = ({ target }) => this.props.onOptionsChange({ ...this.props.options, strokeWidth: target.value });
+  onStrokeWidthChange = ({ target }) =>
+    this.props.onOptionsChange({ ...this.props.options, strokeWidth: target.value });
 
   render() {
     const { options } = this.props;