diff --git a/files/service/maldet.sh b/files/service/maldet.sh
index 6473782..b8ca3e8 100644
--- a/files/service/maldet.sh
+++ b/files/service/maldet.sh
@@ -7,7 +7,11 @@
 # processname: maldet
 
 # Source function library.
-. /etc/init.d/functions
+if [ -f /etc/init.d/functions ]; then
+        . /etc/init.d/functions
+elif [ -f /lib/lsb/init-functions ]; then
+        . /lib/lsb/init-functions
+fi
 if [ -f "/etc/sysconfig/maldet" ]; then
 	. /etc/sysconfig/maldet
 elif [ "$(egrep ^default_monitor_mode /usr/local/maldetect/conf.maldet 2> /dev/null)" ]; then
@@ -18,7 +22,11 @@ elif [ "$(egrep ^default_monitor_mode /usr/local/maldetect/conf.maldet 2> /dev/n
 fi
 RETVAL=0
 prog="maldet"
-LOCKFILE=/var/lock/subsys/$prog
+if [ -d /var/lock/subsys ]; then
+        LOCKFILE=/var/lock/subsys/$prog
+else
+        LOCKFILE=/var/lock/$prog
+fi
 
 if [ -z "$MONITOR_MODE" ]; then
 	echo "error no default monitor mode defined, set \$MONITOR_MODE in /etc/sysconfig/maldet or \$default_monitor_mode in /usr/local/maldetect/conf.maldet"