diff --git a/files/image_config/bash/bash.bashrc b/files/image_config/bash/bash.bashrc
index d65beb5b08..6651a51cee 100644
--- a/files/image_config/bash/bash.bashrc
+++ b/files/image_config/bash/bash.bashrc
@@ -54,5 +54,5 @@ if [ -x /usr/lib/command-not-found -o -x /usr/share/command-not-found/command-no
     }
 fi
 
-# enable auto-logout for console ttyS* sessions
-tty | grep ttyS >/dev/null && TMOUT=300
+# Automatically log out console ttyS* sessions after 15 minutes of inactivity
+tty | grep ttyS >/dev/null && TMOUT=900