diff --git a/cddl/lib/libtpool/tests/Makefile b/cddl/lib/libtpool/tests/Makefile
index d87f5fc86789..19e43cc18821 100644
--- a/cddl/lib/libtpool/tests/Makefile
+++ b/cddl/lib/libtpool/tests/Makefile
@@ -1,12 +1,13 @@
 ZFSTOP= ${SRCTOP}/sys/contrib/openzfs
 
 ATF_TESTS_C+=	libtpool_test
 
 TEST_METADATA+= timeout="10"
 
 CFLAGS+=	-I${ZFSTOP}/include \
 		-I${ZFSTOP}/lib/libspl/include
 
 LIBADD+=	pthread tpool
 
+.include "${SRCTOP}/cddl/Makefile.inc"
 .include <bsd.test.mk>