diff --git a/lisp/ox-koma-letter.el b/lisp/ox-koma-letter.el
index f6aa84aba..6a895a6a2 100644
--- a/lisp/ox-koma-letter.el
+++ b/lisp/ox-koma-letter.el
@@ -594,7 +594,7 @@ such as the one tagged with PS."
 
 ;;;; Export Block
 
-(defun org-koma-letter-export-block (export-block contents info)
+(defun org-koma-letter-export-block (export-block _contents _info)
   "Transcode an EXPORT-BLOCK element into KOMA Scrlttr2 code.
 CONTENTS is nil.  INFO is a plist used as a communication
 channel."
@@ -604,7 +604,7 @@ channel."
 
 ;;;; Export Snippet
 
-(defun org-koma-letter-export-snippet (export-snippet contents info)
+(defun org-koma-letter-export-snippet (export-snippet _contents _info)
   "Transcode an EXPORT-SNIPPET object into KOMA Scrlttr2 code.
 CONTENTS is nil.  INFO is a plist used as a communication
 channel."