diff --git a/xymon/xymon.libs.alert.sh b/xymon/xymon.libs.alert.sh
index 2387895..2082dcb 100755
--- a/xymon/xymon.libs.alert.sh
+++ b/xymon/xymon.libs.alert.sh
@@ -104,16 +104,16 @@ if echo "${BBALPHAMSG}" | grep -qE "\\&yellow The following processes.*" ; then
 			[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : while bin_path loop — service for ${bin_path} is not managed." >> "${debug_stdout}"
 		else
 			[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : while bin_path loop — ${service_name} need to be restarted." >> "${debug_stdout}"
-			[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : while bin_path loop — ssh -o StrictHostKeyChecking=no ${REMOTE_SSH_USER}@${BBHOSTNAME} sudo systemctl restart ${service_name}.service" >> "${debug_stdout}"
-			ssh -o StrictHostKeyChecking=no ${REMOTE_SSH_USER}@${BBHOSTNAME} sudo systemctl restart ${service_name}.service >> "${debug_stdout}" 2>> "${debug_stderr}"
+			[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : while bin_path loop — ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null ${REMOTE_SSH_USER}@${BBHOSTNAME} sudo systemctl restart ${service_name}.service" >> "${debug_stdout}"
+			ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null ${REMOTE_SSH_USER}@${BBHOSTNAME} sudo systemctl restart ${service_name}.service >> "${debug_stdout}" 2>> "${debug_stderr}"
 		fi
 		# }}}
 	done < "${service_list}"
 
 	# Also restart xymon-client service {{{
 	[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Test service — xymon-client also need to be restarted." >> "${debug_stdout}"
-	[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Test service — ssh -o StrictHostKeyChecking=no ${REMOTE_SSH_USER}@${BBHOSTNAME} sudo systemctl restart xymon-client.service" >> "${debug_stdout}"
-	ssh -o StrictHostKeyChecking=no ${REMOTE_SSH_USER}@${BBHOSTNAME} sudo systemctl restart xymon-client.service >> "${debug_stdout}" 2>> "${debug_stderr}"
+	[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Test service — ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null ${REMOTE_SSH_USER}@${BBHOSTNAME} sudo systemctl restart xymon-client.service" >> "${debug_stdout}"
+	ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null ${REMOTE_SSH_USER}@${BBHOSTNAME} sudo systemctl restart xymon-client.service >> "${debug_stdout}" 2>> "${debug_stderr}"
 	# }}}
 fi