diff --git a/docs/man/sesman.ini.5.in b/docs/man/sesman.ini.5.in
index 4fad8eb4..2074985c 100644
--- a/docs/man/sesman.ini.5.in
+++ b/docs/man/sesman.ini.5.in
@@ -139,6 +139,13 @@ within 60 seconds after the user disconnects.
 Sets the time limit (in seconds) before a disconnected session is killed.
 If set to \fI0\fR, automatic killing is disabled.
 
+.TP
+\fBIdleTimeLimit\fR=\fInumber\fR
+Sets the time limit (in seconds) before an idle session is disconnected.
+Idle means no keyboard inputs and no mouse moves/clicks here.
+If set to \fI0\fR, idle sessions will never be disconnected by timeout.
+This works only with xorgxrdp session. Moreover, xorgxrdp must be v0.2.9 or later.
+
 .TP
 \fBPolicy\fR=\fI[Default|UBD|UBI|UBC|UBDI|UBDC]\fR
 Session allocation policy. By default, a new session is created
diff --git a/sesman/sesman.ini.in b/sesman/sesman.ini.in
index 68ef7795..fb930f6b 100644
--- a/sesman/sesman.ini.in
+++ b/sesman/sesman.ini.in
@@ -44,6 +44,12 @@ KillDisconnected=false
 ; min 60 seconds
 DisconnectedTimeLimit=0
 
+;; IdleTimeLimit (specify in second) - wait before disconnect idle sessions
+; Type: integer
+; Default: 0
+; Set to 0 to disable idle disconnection.
+IdleTimeLimit=0
+
 ;; Policy - session allocation policy
 ; Type: enum [ "Default" | "UBD" | "UBI" | "UBC" | "UBDI" | "UBDC" ]
 ; Default: Xrdp:<User,BitPerPixel> and Xvnc:<User,BitPerPixel,DisplaySize>