diff --git a/src/imwald/ui/feed_page.py b/src/imwald/ui/feed_page.py
index 50865ac..f43abb1 100644
--- a/src/imwald/ui/feed_page.py
+++ b/src/imwald/ui/feed_page.py
@@ -220,7 +220,12 @@ class FeedPage(QWidget):
                 if event.key() == Qt.Key.Key_PageUp:
                     self._prev()
                     return True
-        if obj is self._thread_scroll.viewport() and event.type() == QEvent.Type.Resize:
+        thread_scroll = getattr(self, "_thread_scroll", None)
+        if (
+            thread_scroll is not None
+            and obj is thread_scroll.viewport()
+            and event.type() == QEvent.Type.Resize
+        ):
             self._refit_thread_reply_sizes()
         return super().eventFilter(obj, event)