Index: uspace/app/viewer/viewer.c
===================================================================
--- uspace/app/viewer/viewer.c	(revision f77c1c90c1f223647872d5cefa2d86f63bc846d7)
+++ uspace/app/viewer/viewer.c	(revision a0a9cc249adce31c755defdb6b74a991ebbf55ea)
@@ -110,5 +110,5 @@
 {
 	int fd;
-	int rc = vfs_lookup_open(fname, WALK_REGULAR, MODE_READ, &fd);
+	errno_t rc = vfs_lookup_open(fname, WALK_REGULAR, MODE_READ, &fd);
 	if (rc != EOK)
 		return false;