diff --git a/src/testdir/Make_dos.mak b/src/testdir/Make_dos.mak
index 30325ea..208f4fb 100644
--- a/src/testdir/Make_dos.mak
+++ b/src/testdir/Make_dos.mak
@@ -67,7 +67,8 @@
 		test_signs.out \
 		test_tagcase.out \
 		test_textobjects.out \
-		test_utf8.out
+		test_utf8.out \
+		test_writefile.out
 
 SCRIPTS32 =	test50.out test70.out