Index: uspace/srv/fs/minixfs/mfs_inode.c
===================================================================
--- uspace/srv/fs/minixfs/mfs_inode.c	(revision 382246152be9e6021a08a71ca5574fc4af426381)
+++ uspace/srv/fs/minixfs/mfs_inode.c	(revision 44799a0e5ab124e51750f68656aab2c40477e2b8)
@@ -307,5 +307,8 @@
 	int r;
 
-	assert(size_shrink > 0);
+	if (size_shrink == 0) {
+		/*File is empty*/
+		return EOK;
+	}
 
 	const size_t old_size = ino_i->i_size;