Index: uspace/app/mkfat/mkfat.c
===================================================================
--- uspace/app/mkfat/mkfat.c	(revision c80100f087255f791b581e4a31903cbacc0d8487)
+++ uspace/app/mkfat/mkfat.c	(revision ede7ae19c371b877015a5238d24e3f5e817318d0)
@@ -184,9 +184,4 @@
 	}
 
-	if (cfg.fat_type == FAT12 && cfg.sector_size != 512) {
-		printf(NAME ": Error. Device block size is not 512 bytes for FAT12 file system.\n");
-		return 2;
-	}
-
 	if (cfg.total_sectors == 0) {
 		printf(NAME ": Error. You must specify filesystem size.\n");