--- libmalloc/libmalloc-792.41.1/tests/xzone_testing.h
+++ libmalloc/libmalloc-792.1.1/tests/xzone_testing.h
@@ -120,10 +120,27 @@
 	}
 #endif
 
-	T_ASSERT_GE(zone->version, 14, "zone version");
-	T_ASSERT_EQ(zone->introspect->zone_type, MALLOC_ZONE_TYPE_XZONE,
-			"zone is xzone malloc");
-
+	if (zone->introspect->zone_type != MALLOC_ZONE_TYPE_XZONE) {
+		// Maybe it's nano?
+		i++;
+		if (i == malloc_num_zones) {
+			T_ASSERT_FAIL("didn't find xzone xzone");
+		}
+		malloc_zone_t *helper_zone = malloc_zones[i];
+		const char *helper_name = malloc_get_zone_name(helper_zone);
+		if (helper_name && strcmp(helper_name, "MallocHelperZone") != 0) {
+			T_ASSERT_FAIL("unexpected zone %s", helper_name);
+		}
+
+		found_nano = true;
+
+		zone = helper_zone;
+		T_ASSERT_GE(zone->version, 14, "helper zone version");
+		T_ASSERT_EQ(zone->introspect->zone_type, MALLOC_ZONE_TYPE_XZONE,
+				"helper zone is xzone malloc");
+	}
+
+	bool nano_on_xzone = false;
 	enum {
 		PGM_NO_EXPECTATION,
 		PGM_EXPECTED_ENABLED,
@@ -131,12 +148,17 @@
 	} pgm_expectation = PGM_NO_EXPECTATION;
 
 #if !MALLOC_TARGET_EXCLAVES
+	nano_on_xzone = getenv("MallocNanoOnXzone");
+
 	const char *pgm_env = getenv("MallocProbGuard");
 	if (pgm_env) {
 		pgm_expectation = (*pgm_env == '1' ? PGM_EXPECTED_ENABLED :
 				PGM_EXPECTED_DISABLED);
 	}
 #endif
+
+	T_ASSERT_EQ(nano_on_xzone, found_nano,
+			"Nano state matched expectation (%d)", (int)nano_on_xzone);
 
 	switch (pgm_expectation) {
 	case PGM_NO_EXPECTATION: