diff --git a/src/character.c b/src/character.c
index 5d419a2e836..97065e17f01 100644
--- a/src/character.c
+++ b/src/character.c
@@ -550,9 +550,9 @@ parse_str_as_multibyte (const unsigned char *str, ptrdiff_t len,
 
 /* Arrange unibyte text at STR of NBYTES bytes as a multibyte text.
    It actually converts only such 8-bit characters that don't construct
-   a multibyte sequence to multibyte forms of Latin-1 characters.  If
-   NCHARS is nonzero, set *NCHARS to the number of characters in the
-   text.  It is assured that we can use LEN bytes at STR as a work
+   a multibyte sequence to multibyte forms of raw bytes.  If NCHARS
+   is nonzero, set *NCHARS to the number of characters in the text.
+   It is assured that we can use LEN bytes at STR as a work
    area and that is enough.  Return the number of bytes of the
    resulting text.  */