diff --git a/php/utils/room-icons.php b/php/utils/room-icons.php
index 9f135dc..d4a0c57 100644
--- a/php/utils/room-icons.php
+++ b/php/utils/room-icons.php
@@ -47,7 +47,7 @@
         $room_id = $room->get_room_identifier();
         $icon_cached = room_icon_path($room_id);
         $icon_resized = room_icon_path_resized($room_id, $size);
-        $icon_expired = file_exists($icon_cached) && filemtime($icon_cached) < strtotime("-1 hour");
+        $icon_expired = file_exists($icon_cached) && filemtime($icon_cached) < strtotime("-1 day");
 
         // Re-fetch icons periodically.
         if (!file_exists($icon_cached) || $icon_expired) {