diff --git a/src/testdir/Make_all.mak b/src/testdir/Make_all.mak
index 3a4979b..fab8656 100644
--- a/src/testdir/Make_all.mak
+++ b/src/testdir/Make_all.mak
@@ -398,6 +398,7 @@
 	test_marks.res \
 	test_match.res \
 	test_matchadd_conceal.res \
+	test_matchadd_conceal_utf8.res \
 	test_memory_usage.res \
 	test_messages.res \
 	test_method.res \