diff --git a/src/components/structures/InteractiveAuth.tsx b/src/components/structures/InteractiveAuth.tsx
index cea756adc0..869cd29cba 100644
--- a/src/components/structures/InteractiveAuth.tsx
+++ b/src/components/structures/InteractiveAuth.tsx
@@ -235,7 +235,7 @@ export default class InteractiveAuthComponent extends React.Component<IProps, IS
         this.props.onAuthFinished(false, ERROR_USER_CANCELLED);
     };
 
-    private renderCurrentStage() {
+    private renderCurrentStage(): JSX.Element {
         const stage = this.state.authStage;
         if (!stage) {
             if (this.state.busy) {