diff --git a/share/man/man9/cdefs.9 b/share/man/man9/cdefs.9
index 38762c22f58..350e5d77300 100644
--- a/share/man/man9/cdefs.9
+++ b/share/man/man9/cdefs.9
@@ -385,7 +385,7 @@ Likewise, when C23 dialog is selected with
 or
 .St -p1003.1-2024 ,
 definitions for
-.St -isoC-2023
+.St -isoC-2024
 are also included.
 .Ss Header Visibility Macros
 These macros are set by