diff --git a/src/testdir/Make_dos.mak b/src/testdir/Make_dos.mak
index b15951e..0dd1a09 100644
--- a/src/testdir/Make_dos.mak
+++ b/src/testdir/Make_dos.mak
@@ -17,7 +17,7 @@
 		test23.out test24.out test28.out test29.out \
 		test35.out test36.out test43.out \
 		test44.out test45.out test46.out test47.out \
-		test48.out test51.out
+		test48.out test51.out test53.out
 
 SCRIPTS =	test3.out test4.out test5.out test6.out test7.out \
 		test8.out test9.out test11.out test13.out test14.out \