diff --git a/bin/ps/ps.1 b/bin/ps/ps.1
index 2e4877b97742..5d5e126a20ee 100644
--- a/bin/ps/ps.1
+++ b/bin/ps/ps.1
@@ -431,7 +431,8 @@ real user
 .It ruser
 user name (from ruid)
 .It sid
-session ID
+session
+.Tn ID
 .It sig
 pending signals (alias pending)
 .It sigcatch
@@ -460,7 +461,8 @@ control terminal process group
 .\".It trss
 .\"text resident set size (in Kbytes)
 .It tsid
-control terminal session ID
+control terminal session
+.Tn ID
 .It tsiz
 text size (in Kbytes)
 .It tt