diff --git a/en_US/spat-revolution/_quarto.yml b/en_US/spat-revolution/_quarto.yml
index d8248ede..f6e2da5f 100644
--- a/en_US/spat-revolution/_quarto.yml
+++ b/en_US/spat-revolution/_quarto.yml
@@ -84,7 +84,6 @@ book:
        chapters:
         - Appendix_D_release_notes/Appendix_D_release_notes_50385.md
         - Appendix_D_release_notes/Appendix_D_release_notes_50341.md
-        - Appendix_D_release_notes/Appendix_D_release_notes_50341.md
         - Appendix_D_release_notes/Appendix_D_release_notes_50318.md
         - Appendix_D_release_notes/Appendix_D_release_notes_50222.md
         - Appendix_D_release_notes/Appendix_D_release_notes_50219.md