diff --git a/src/testdir/Make_dos.mak b/src/testdir/Make_dos.mak
index 0f9514c..603f4a4 100644
--- a/src/testdir/Make_dos.mak
+++ b/src/testdir/Make_dos.mak
@@ -44,6 +44,7 @@
 		test_charsearch.out \
 		test_close_count.out \
 		test_command_count.out \
+		test_comparators.out \
 		test_erasebackword.out \
 		test_eval.out \
 		test_fixeol.out \