diff --git a/src/features/compose/components/compose-form.tsx b/src/features/compose/components/compose-form.tsx
index 1e4b4da68..c7206ea89 100644
--- a/src/features/compose/components/compose-form.tsx
+++ b/src/features/compose/components/compose-form.tsx
@@ -101,7 +101,7 @@ const ComposeForm = <ID extends string>({ id, shouldCondense, autoFocus, clickab
 
   const hasPoll = !!compose.poll;
   const isEditing = compose.id !== null;
-  const anyMedia = compose.media_attachments.size > 0;
+  const anyMedia = compose.media_attachments.length > 0;
 
   const [composeFocused, setComposeFocused] = useState(false);