diff --git a/test/unit/mallctl.c b/test/unit/mallctl.c
index d9fdd058..0b14e78f 100644
--- a/test/unit/mallctl.c
+++ b/test/unit/mallctl.c
@@ -157,6 +157,7 @@ TEST_BEGIN(test_mallctl_opt) {
 } while (0)
 
 	TEST_MALLCTL_OPT(bool, abort, always);
+	TEST_MALLCTL_OPT(bool, abort_conf, always);
 	TEST_MALLCTL_OPT(bool, metadata_thp, always);
 	TEST_MALLCTL_OPT(bool, retain, always);
 	TEST_MALLCTL_OPT(const char *, dss, always);