diff --git a/man3/div.3 b/man3/div.3
index 97952f9a2..f9c0527f6 100644
--- a/man3/div.3
+++ b/man3/div.3
@@ -87,7 +87,7 @@ of the same type as the function arguments.
 .SH "RETURN VALUE"
 The \fIdiv_t\fP (etc.) structure.
 .SH "CONFORMING TO"
-SVr4, 4.3BSD, C89.
+SVr4, 4.3BSD, C89. C99.
 The functions
 .BR lldiv ()
 and