diff --git a/install_mariadb.sh b/install_mariadb.sh
index ecaa13b..1892c9e 100644
--- a/install_mariadb.sh
+++ b/install_mariadb.sh
@@ -31,7 +31,7 @@ cd /var/lib
 mkdir mysql
 
 mpoint=`stat -c %m -- "$Z_MYSQL_INS_FOLDER"`
-if [ x"$mpoint" = x"/" ]; then
+if [ x"$mpoint" != x"/" ]; then
 	sed -i '/\/var\/lib\/mysql/s/.*/#&/' /etc/fstab
 	echo "$Z_MYSQL_INS_FOLDER/var /var/lib/mysql  none    bind,x-systemd.requires-mounts-for=$mpoint 0 0" >>/etc/fstab
 	mount -a