diff --git a/zshrc b/zshrc
index fc319b1..67cd20c 100644
--- a/zshrc
+++ b/zshrc
@@ -100,6 +100,9 @@ unsetopt beep
 # autoload calc
 autoload zcalc
 
+# automatically log of on 10*60 sec inactivity
+[[ $EUID == 0 ]] && export TMOUT=600
+
 # PROMPT && RPROMPT
 if [[ $EUID == 0 ]]; then
 # [root@host dir]#
diff --git a/zshrc_server b/zshrc_server
index 8dd120d..96840d8 100644
--- a/zshrc_server
+++ b/zshrc_server
@@ -100,6 +100,9 @@ unsetopt beep
 # autoload calc
 autoload zcalc
 
+# automatically log of on 10*60 sec inactivity
+[[ $EUID == 0 ]] && export TMOUT=600
+
 # PROMPT && RPROMPT
 if [[ $EUID == 0 ]]; then
 # [root@host dir]#