rkhunter: Error: Invalid display – language keyword cannot be found: Display line

Alertas en rkhunter indicando este probelma :

Error: Invalid display - language keyword cannot be found: Display line: display --to LOG --type PLAIN --result OK --log-indent 4 ROOTKIT_ADD_SUCKIT_LINK
Error: Invalid display - language keyword cannot be found: Display line: display --to LOG --type INFO STARTUP_FOUND_LOCAL_RC_FILE /etc/rc.d/rc.local
Error: Invalid display - language keyword cannot be found: Display line: display --to LOG --type INFO STARTUP_FOUND_LOCAL_RC_FILE /etc/rc.d/rc.sysinit
Error: Invalid display - language keyword cannot be found: Display line: display --to LOG --type INFO STARTUP_FOUND_LOCAL_RC_FILE /etc/inittab
Error: Invalid display - language keyword cannot be found: Display line: display --to LOG --type INFO STARTUP_FOUND_LOCAL_RC_FILE /etc/rc.d/rc.local
Error: Invalid display - language keyword cannot be found: Display line: display --to LOG --type INFO STARTUP_FOUND_LOCAL_RC_FILE /etc/rc.d/rc.sysinit
Error: Invalid display - language keyword cannot be found: Display line: display --to LOG --type INFO STARTUP_FOUND_LOCAL_RC_FILE /etc/inittab
Error: Invalid display - language keyword cannot be found: Display line: display --to SCREEN+LOG --type PLAIN --color GREEN --result FOUND --log-indent 2 --screen-indent 4 STARTUP_LOCAL_RC_FILE
Error: Invalid display - language keyword cannot be found: Display line: display --to SCREEN+LOG --type PLAIN --color GREEN --result NONE_FOUND --log-indent 2 --screen-indent 4 STARTUP_CHECK_LOCAL_RC 
Error: Invalid display - language keyword cannot be found: Display line: display --to LOG --type INFO STARTUP_CHECK_SYSTEM_RC_FOUND /etc/rc.d
Error: Invalid display - language keyword cannot be found: Display line: display --to SCREEN+LOG --type PLAIN --result NONE_FOUND --color GREEN --log-indent 2 --screen-indent 4 STARTUP_CHECK_SYSTEM_RC

Es debido a que no teneis instalado rkhunter 1.3.4
Si lo quereis instalar rápìdamente en Centos/Red Hat podeis usar esta chuleta

wget http://surfnet.dl.sourceforge.net/sourceforge/rkhunter/rkhunter-1.3.4.tar.gz
tar zxvf rkhunter-1.3.4.tar.gz
cd /usr/src/rkhunter-1.3.4
sh ./installer.sh --layout default --install
/usr/local/bin/rkhunter --update