diff --git a/lib/libc/tests/sys/Makefile b/lib/libc/tests/sys/Makefile
index 3abcb9924ee..0dca1896631 100644
--- a/lib/libc/tests/sys/Makefile
+++ b/lib/libc/tests/sys/Makefile
@@ -4,7 +4,9 @@ PACKAGE=			tests
 
 .include <bsd.own.mk>
 
+.if ${MACHINE_CPUARCH} != "aarch64" && ${MACHINE_CPUARCH} != "riscv"
 ATF_TESTS_C+=			brk_test
+.endif
 ATF_TESTS_C+=			queue_test
 
 # TODO: clone, lwp_create, lwp_ctl, posix_fadvise, recvmmsg,