diff --git a/usr.bin/yes/yes.1 b/usr.bin/yes/yes.1
index e19020f70ae..2858ccd20b7 100644
--- a/usr.bin/yes/yes.1
+++ b/usr.bin/yes/yes.1
@@ -52,4 +52,4 @@ forever.
 The
 .Nm
 command appeared in
-.Bx 4.0 .
+.At 32v .