1 files changed, 1 insertions, 1 deletions

diff --git a/src/character.h b/src/character.h
index cf73083dd04..b391fe14474 100644
--- a/src/character.h
+++ b/src/character.h
@@ -73,7 +73,7 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #define CHAR_TO_BYTE_SAFE(c)    \
   (CHAR_BYTE8_P (c)             \
    ? (c) - 0x3FFF00             \
-   : multibyte_char_to_unibyte_safe (c, Qnil))
+   : multibyte_char_to_unibyte_safe (c))
 
 /* Nonzero iff BYTE is the 1st byte of a multibyte form of a character
    that corresponds to a raw 8-bit byte.  */