diff --git a/tools/testing/ktest/sample.conf b/tools/testing/ktest/sample.conf
index 0a290fb4cd5e746b278001719c4e2e518106b83b..2eb4bd2f6ab4134cdd9d4653a1ee4b09dd0591ab 100644
--- a/tools/testing/ktest/sample.conf
+++ b/tools/testing/ktest/sample.conf
@@ -328,6 +328,13 @@
 # For a virtual machine with guest name "Guest".
 #CONSOLE =  virsh console Guest
 
+# Signal to send to kill console.
+# ktest.pl will create a child process to monitor the console.
+# When the console is finished, ktest will kill the child process
+# with this signal.
+# (default INT)
+#CLOSE_CONSOLE_SIGNAL = HUP
+
 # Required version ending to differentiate the test
 # from other linux builds on the system.
 #LOCALVERSION = -test