FAT32 - Unallocated space within partition

I have an SD card with 3 partitions: FAT32, EXT4 and swap. I shrank and moved them recently, but due to a bug in GParted (segfault while resizing FAT32) it is left like this: **Size**: 5.87 GiB **Used**: 623 MiB **Unused**: 4.37 GiB **Unallocated**: 915 MiB GParted suggests me to repair the partition with Partition -> Check, but there's that bug. Any other tools which can do the same thing - expand fat32 size to the same as in the partition table? I tried dosfsck/fsck.vfat and MS chkdsk, none of them helped.