I was checking some things out and just happen to run across this message when I ran

dmesg | grep sda
[    0.963710] sd 0:0:0:0: [sda] 976773168 512-byte logical blocks: (500 GB/466 GiB)
[    0.963718] sd 0:0:0:0: [sda] Write Protect is off
[    0.963719] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    0.963731] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[    1.005862]  sda: sda1 sda2 sda3 sda4
[    1.006348] sd 0:0:0:0: [sda] Attached SCSI disk
[    1.781977] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null)
[    5.013101] EXT4-fs (sda2): re-mounted. Opts: data=ordered
[   10.207476] Adding 6117376k swap on /dev/sda4.  Priority:-2 extents:1 across:6117376k FS
[   11.119679] EXT4-fs (sda3): mounted filesystem with ordered data mode. Opts: data=ordered
[   11.292909] FAT-fs (sda1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.

The line I’m concerned with is

Volume was not properly unmounted. Some data may be corrupt. Please run fsck.

While I’ve not seen anything noticeably bad since my recent reinstall, I’m concerned this could be bad down the road, so I’m asking what should I do to get rid of the error and what could be causing it?