1 files changed, 0 insertions, 1 deletions

diff --git a/src/lisp.h b/src/lisp.h
index a066dccccd0..580509e7e3f 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -2120,7 +2120,6 @@ EXFUN (Fchar_width, 1);
 EXFUN (Fstring, MANY);
 extern int chars_in_text P_ ((unsigned char *, int));
 extern int multibyte_chars_in_text P_ ((unsigned char *, int));
-extern int unibyte_char_to_multibyte P_ ((int));
 extern int multibyte_char_to_unibyte P_ ((int, Lisp_Object));
 extern Lisp_Object Qcharset;
 extern void init_charset P_ ((void));