diff --git a/src/testdir/Make_dos.mak b/src/testdir/Make_dos.mak
index cd7aa4d..38264f2 100644
--- a/src/testdir/Make_dos.mak
+++ b/src/testdir/Make_dos.mak
@@ -63,7 +63,7 @@
 fixff:
 	-$(VIMPROG) -u dos.vim --noplugin "+argdo set ff=dos|upd" +q *.in *.ok
 	-$(VIMPROG) -u dos.vim --noplugin "+argdo set ff=unix|upd" +q \
-		dotest.in test60.ok test71.ok test74.ok
+		dotest.in test60.ok test71.ok test74.ok test100.ok
 
 report:
 	@echo ""