1 files changed, 2 insertions, 1 deletions
diff --git a/gnulib-tests/test-dup.c b/gnulib-tests/test-dup.c
index 6ada484a..b2cf9357 100644
--- a/gnulib-tests/test-dup.c
+++ b/gnulib-tests/test-dup.c
@@ -1,5 +1,5 @@
 /* Test duplicating a file descriptor.
-   Copyright (C) 2011-2012 Free Software Foundation, Inc.
+   Copyright (C) 2011-2013 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -35,6 +35,7 @@ main (void)
     ASSERT (errno == EBADF);
   }
   {
+    close (99);
     errno = 0;
     ASSERT (dup (99) == -1);
     ASSERT (errno == EBADF);