diff --git a/tests/alldts.c b/tests/alldts.c
index d0fe4f24139b4e2e91225a0da6cd795e8d0c6cad..8b26651fc894bcc7bd0cb47590ba3bdb309a3dbd 100644
--- a/tests/alldts.c
+++ b/tests/alldts.c
@@ -16,6 +16,7 @@
You should have received a copy of the GNU General Public License
along with this program. If not, see . */
+
#ifdef HAVE_CONFIG_H
# include
#endif