diff --git a/src/components/views/messages/MKeyVerificationConclusion.tsx b/src/components/views/messages/MKeyVerificationConclusion.tsx
index 3e2ae9fa9b..66ae3766d6 100644
--- a/src/components/views/messages/MKeyVerificationConclusion.tsx
+++ b/src/components/views/messages/MKeyVerificationConclusion.tsx
@@ -55,7 +55,7 @@ export default class MKeyVerificationConclusion extends React.Component<IProps>
         }
     }
 
-    private onRequestChanged = () => {
+    private onRequestChanged = (): void => {
         this.forceUpdate();
     };