# grouping of optical drives from multiple kernel subsystems
-BUS="scsi", KERNEL="sr[0-9]*", SYMLINK="cdrom%e"
-BUS="ide", KERNEL="hd[a-z]", SYSFS{removable}="1", SYMLINK="cdrom%e", PROGRAM="/bin/cat /proc/ide/%k/media", RESULT="cdrom"
-BUS="ide", KERNEL="pcd[0-9]*", SYSFS{removable}="1", SYMLINK="cdrom%e"
+BUS=="scsi", KERNEL=="sr[0-9]*", SYMLINK+="cdrom%e"
+BUS=="ide", KERNEL=="hd[a-z]", SYSFS{removable}=="1", \
+ PROGRAM="/bin/cat /proc/ide/%k/media", RESULT=="cdrom", \
+ SYMLINK+="cdrom%e"
+BUS=="ide", KERNEL=="pcd[0-9]*", SYSFS{removable}=="1", SYMLINK+="cdrom%e"