diff --git a/tests/unit/test_s390x.c b/tests/unit/test_s390x.c
index 354656d6..98d8c3ed 100644
--- a/tests/unit/test_s390x.c
+++ b/tests/unit/test_s390x.c
@@ -31,4 +31,4 @@ static void test_s390x_lr()
     OK(uc_close(uc));
 }
 
-TEST_LIST = {{"test_s390x_lr", test_s390x_lr}};
+TEST_LIST = {{"test_s390x_lr", test_s390x_lr}, {NULL, NULL}};