diff --git a/contrib/lisp/ox-koma-letter.el b/contrib/lisp/ox-koma-letter.el
index e51fab3d1..aad067297 100644
--- a/contrib/lisp/ox-koma-letter.el
+++ b/contrib/lisp/ox-koma-letter.el
@@ -616,6 +616,8 @@ holding export options."
    ;; Time-stamp.
    (and (plist-get info :time-stamp-file)
         (format-time-string "%% Created %Y-%m-%d %a %H:%M\n"))
+   ;; LaTeX compiler
+   (org-latex--insert-compiler info)
    ;; Document class and packages.
    (org-latex--make-preamble info)
    ;; Settings.  They can come from three locations, in increasing