diff --git a/packages/react-vega/src/VegaEmbed.tsx b/packages/react-vega/src/VegaEmbed.tsx
index d8303bff..3838b41f 100644
--- a/packages/react-vega/src/VegaEmbed.tsx
+++ b/packages/react-vega/src/VegaEmbed.tsx
@@ -11,7 +11,7 @@ export type VegaEmbedProps = {
   signalListeners?: SignalListeners;
   style?: CSSProperties;
   onNewView?: ViewListener;
-  onError?: (error: Error) => {};
+  onError?: (error: Error) => void;
 } & EmbedOptions & {};
 
 export default class VegaEmbed extends React.PureComponent<VegaEmbedProps> {