1 files changed, 1 insertions, 1 deletions
diff --git a/FrontEnd/src/app/views/timeline-common/MarkdownPostEdit.tsx b/FrontEnd/src/app/views/timeline-common/MarkdownPostEdit.tsx
index 6d0e5431..685e17be 100644
--- a/FrontEnd/src/app/views/timeline-common/MarkdownPostEdit.tsx
+++ b/FrontEnd/src/app/views/timeline-common/MarkdownPostEdit.tsx
@@ -67,7 +67,7 @@ const MarkdownPostEdit: React.FC<MarkdownPostEditProps> = ({
   }, []);
 
   React.useEffect(() => {
-    window.onbeforeunload = () => {
+    window.onbeforeunload = (): unknown => {
       if (!canLeave) {
         return t("timeline.confirmLeave");
       }