diff --git a/usr.bin/procstat/procstat.1 b/usr.bin/procstat/procstat.1
index 593cf228e9d7..38681f8f1c22 100644
--- a/usr.bin/procstat/procstat.1
+++ b/usr.bin/procstat/procstat.1
@@ -418,6 +418,8 @@ default
 device
 .It ph
 physical
+.It sg
+scatter/gather
 .It sw
 swap
 .It vn