diff --git a/embed.fnc b/embed.fnc
index efe62e6502b7..9f98369d66d0 100644
--- a/embed.fnc
+++ b/embed.fnc
@@ -3890,7 +3890,7 @@ Admp	|U8 *	|uv_to_utf8_msgs|NN U8 *d				\
 				|UV uv					\
 				|UV flags				\
 				|NULLOK HV **msgs
-CDbp	|U8 *	|uvuni_to_utf8	|NN U8 *d				\
+ADbdp	|U8 *	|uvuni_to_utf8	|NN U8 *d				\
 				|UV uv
 EXdpx	|bool	|validate_proto |NN SV *name				\
 				|NULLOK SV *proto			\
diff --git a/mathoms.c b/mathoms.c
index f519db3a32e6..ac1e1e38313d 100644
--- a/mathoms.c
+++ b/mathoms.c
@@ -142,6 +142,15 @@ Perl_utf8_to_uvuni(pTHX_ const U8 *s, STRLEN *retlen)
     return NATIVE_TO_UNI(valid_utf8_to_uvchr(s, retlen));
 }
 
+/*
+=for apidoc_section $unicode
+=for apidoc uvuni_to_utf8
+
+Instead use L<perlapi/uv_to_utf8>.
+
+=cut
+*/
+
 U8 *
 Perl_uvuni_to_utf8(pTHX_ U8 *d, UV uv)
 {