--syn match fsDeviceError /\%([^a-zA-Z0-9_\/#@:]\|^\w\{-}\ze\W\)/ contained
-+syn match fsDeviceError /\%([^a-zA-Z0-9_\/#@\-:]\)/ contained
- syn keyword fsDeviceKeyword contained none proc linproc tmpfs devpts sysfs usbfs
+-syn match fsDeviceError /\%([^a-zA-Z0-9_\/#@:\.-]\|^\w\{-}\ze\W\)/ contained
++syn match fsDeviceError /\%([^a-zA-Z0-9_\/#@:\.-]\)/ contained
+ syn keyword fsDeviceKeyword contained none proc linproc tmpfs devpts devtmpfs sysfs usbfs