diff --git a/src/components/views/messages/SenderProfile.tsx b/src/components/views/messages/SenderProfile.tsx
index fa635eaedb..f0dd77f746 100644
--- a/src/components/views/messages/SenderProfile.tsx
+++ b/src/components/views/messages/SenderProfile.tsx
@@ -36,7 +36,7 @@ interface IState {
 @replaceableComponent("views.messages.SenderProfile")
 export default class SenderProfile extends React.Component<IProps, IState> {
     static contextType = MatrixClientContext;
-    unmounted: boolean;
+    private unmounted: boolean;
 
     constructor(props: IProps) {
         super(props)