Index: uspace/srv/fs/mfs/mfs_balloc.c
===================================================================
--- uspace/srv/fs/mfs/mfs_balloc.c	(revision 80445cfd29feacaacb22e6ae84c99651d87214b2)
+++ uspace/srv/fs/mfs/mfs_balloc.c	(revision db71e2af5cdfe169de296e6f39b3e5eda7a966f6)
@@ -202,5 +202,5 @@
 		start_block = 2;
 		nblocks = sbi->ibmap_blocks;
-		limit = sbi->ninodes;
+		limit = sbi->ninodes - 1;
 	}
 	bits_per_block = sbi->block_size * 8;