diff --git a/src/toad/widgets/conversation.py b/src/toad/widgets/conversation.py
index 857bb699e..c6051eb5f 100644
--- a/src/toad/widgets/conversation.py
+++ b/src/toad/widgets/conversation.py
@@ -378,6 +378,8 @@ def animation_visible(self) -> bool:
     def _effect_region(self) -> Region | None:
         cursor = self.query_ancestor(Conversation).navigation.cursor
         visible = cursor.visible_region
+        if not isinstance(visible, Region):
+            return None
         if visible.height == 0:
             return Region(0, 0, 1, 0)
         return Region(0, visible.y - self.region.y, 1, visible.height)