Index: uspace/app/sysinst/futil.c
===================================================================
--- uspace/app/sysinst/futil.c	(revision c1694b6b243b360b5f1fbf0629b5e7d4f7f4a515)
+++ uspace/app/sysinst/futil.c	(revision 9246016f2cd9a449613c5c8a7e45dcdc5c78a8f5)
@@ -63,10 +63,10 @@
 	printf("Copy '%s' to '%s'.\n", srcp, destp);
 
-	sf = vfs_lookup_open(srcp, WALK_REGULAR, MODE_READ);
-	if (sf < 0)
-		return EIO;
-
-	df = vfs_lookup_open(destp, WALK_REGULAR | WALK_MAY_CREATE, MODE_WRITE);
-	if (df < 0)
+	rc = vfs_lookup_open(srcp, WALK_REGULAR, MODE_READ, &sf);
+	if (rc != EOK)
+		return EIO;
+
+	rc = vfs_lookup_open(destp, WALK_REGULAR | WALK_MAY_CREATE, MODE_WRITE, &df);
+	if (rc != EOK)
 		return EIO;
 
@@ -87,5 +87,5 @@
 
 	rc = vfs_put(df);
-	if (rc < 0)
+	if (rc != EOK)
 		return EIO;
 
@@ -167,6 +167,6 @@
 	struct stat st;
 
-	sf = vfs_lookup_open(srcp, WALK_REGULAR, MODE_READ);
-	if (sf < 0)
+	rc = vfs_lookup_open(srcp, WALK_REGULAR, MODE_READ, &sf);
+	if (rc != EOK)
 		return ENOENT;