diff --git a/share/man/man4/mem.4 b/share/man/man4/mem.4
--- a/share/man/man4/mem.4
+++ b/share/man/man4/mem.4
@@ -25,7 +25,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd March 11, 2022
+.Dd March 24, 2024
 .Dt MEM 4
 .Os
 .Sh NAME
@@ -298,11 +298,13 @@
 .Xr memcontrol 8
 .Sh HISTORY
 The
-.Nm mem
+.Pa /dev/mem
+file appeared in
+.At v1
 and
-.Nm kmem
-files appeared in
-.At v6 .
+.Pa /dev/kmem
+in
+.At v5 .
 The ioctl interface for memory range attributes was added in
 .Fx 3.2 .
 .Sh BUGS