diff --git a/tools/testing/selftests/ftrace/Makefile b/tools/testing/selftests/ftrace/Makefile
index 346720639d1d6c6d126379738969e679455ae630..0acbeca472255f01bf6a987739f2b8d32213095f 100644
--- a/tools/testing/selftests/ftrace/Makefile
+++ b/tools/testing/selftests/ftrace/Makefile
@@ -1,6 +1,7 @@
 all:
 
 TEST_PROGS := ftracetest
+TEST_DIRS := test.d/
 
 include ../lib.mk