diff --git a/js/src/forum/extenders/extendCommentPost.tsx b/js/src/forum/extenders/extendCommentPost.tsx
index c7cc9cc..13a3b63 100644
--- a/js/src/forum/extenders/extendCommentPost.tsx
+++ b/js/src/forum/extenders/extendCommentPost.tsx
@@ -10,7 +10,7 @@ export default function extendCommentPost() {
     if (app.forum.attribute<boolean>('fof-geoip.showFlag')) {
       const ipInfo = this.attrs.post.ip_info?.();
       const postUser = this.attrs.post.user();
-      if (postUser && postUser.preferences().showIPCountry && ipInfo) {
+      if (postUser && postUser?.preferences?.().showIPCountry && ipInfo) {
         const { image } = getIPData(ipInfo);
         if (image) {
           items.add('country', image, 100);