diff --git a/.dir-locals.el b/.dir-locals.el
index 12a6f08739..0edf2a8d23 100644
--- a/.dir-locals.el
+++ b/.dir-locals.el
@@ -60,8 +60,6 @@
    ;; 'modify-inputs' and its keywords.
    (eval . (put 'modify-inputs 'scheme-indent-function 1))
    (eval . (put 'replace 'scheme-indent-function 1))
-   (eval . (put 'prepend 'scheme-indent-function 2))
-   (eval . (put 'append 'scheme-indent-function 2))
 
    ;; 'modify-phases' and its keywords.
    (eval . (put 'modify-phases 'scheme-indent-function 1))