diff --git a/autoload/fern/internal/viewer/auto_duplication.vim b/autoload/fern/internal/viewer/auto_duplication.vim
index 9f4e935..0522ce5 100644
--- a/autoload/fern/internal/viewer/auto_duplication.vim
+++ b/autoload/fern/internal/viewer/auto_duplication.vim
@@ -1,5 +1,6 @@
 function! fern#internal#viewer#auto_duplication#init() abort
-  if g:fern#disable_viewer_auto_duplication || g:fern#disable_drawer_tabpage_isolation
+  if g:fern#disable_viewer_auto_duplication ||
+    \ (g:fern#disable_drawer_tabpage_isolation && fern#internal#drawer#is_drawer())
     return
   endif