diff --git a/web/src/message_list.ts b/web/src/message_list.ts
index 78604f489a..ab60d4d519 100644
--- a/web/src/message_list.ts
+++ b/web/src/message_list.ts
@@ -428,8 +428,8 @@ export class MessageList {
         let deactivated = false;
         let just_unsubscribed = false;
         const subscribed = stream_data.is_subscribed(stream_id);
-        const invite_only = sub && sub.invite_only;
-        const is_web_public = sub && sub.is_web_public;
+        const invite_only = sub?.invite_only;
+        const is_web_public = sub?.is_web_public;
         const can_toggle_subscription =
             sub !== undefined && stream_data.can_toggle_subscription(sub);
         if (sub === undefined) {
diff --git a/web/src/user_profile.ts b/web/src/user_profile.ts
index 07645a1eee..71d071a40b 100644
--- a/web/src/user_profile.ts
+++ b/web/src/user_profile.ts
@@ -323,7 +323,7 @@ function render_user_stream_list(streams: StreamSubscription[], user: User): voi
         filter: {
             $element: $("#user-profile-streams-tab .stream-search"),
             predicate(item, value) {
-                return item && item.name.toLocaleLowerCase().includes(value);
+                return item?.name.toLocaleLowerCase().includes(value);
             },
             onupdate() {
                 if ($container.find(".empty-table-message").length) {