diff --git a/lib/libc/string/timingsafe_bcmp.3 b/lib/libc/string/timingsafe_bcmp.3
index d3a4ce004757..52c7be7410ef 100644
--- a/lib/libc/string/timingsafe_bcmp.3
+++ b/lib/libc/string/timingsafe_bcmp.3
@@ -87,4 +87,4 @@ function first appeared in
 .Ox 5.6 .
 .Pp
 Both functions first appeared in
-.Fx 12.0 .
+.Fx 11.1 .