Index: uspace/app/mkminix/mkminix.c
===================================================================
--- uspace/app/mkminix/mkminix.c	(revision c64506bde77ac033199ebc0dd74a5211909c086e)
+++ uspace/app/mkminix/mkminix.c	(revision 58319fd145a9577e27386e1b8dfad8f46673f30c)
@@ -486,4 +486,7 @@
 	block_write_direct(sb->handle, 2, ibmap_nblocks, ibmap_buf);
 	block_write_direct(sb->handle, 2 + ibmap_nblocks, zbmap_nblocks, zbmap_buf);
+
+	free(ibmap_buf);
+	free(zbmap_buf);
 }