diff --git a/inc/Maat_rule.h b/inc/Maat_rule.h
index fcdeee4..d22aabd 100644
--- a/inc/Maat_rule.h
+++ b/inc/Maat_rule.h
@@ -325,6 +325,7 @@ int Maat_fqdn_plugin_EX_register(Maat_feather_t feather, int table_id,
 										Maat_plugin_EX_dup_func_t* dup_func,
 										long argl, void *argp);
 
+//Return order: Longger suffix first, then fqdn with bigger index first.
 int Maat_fqdn_plugin_get_EX_data(Maat_feather_t feather, int table_id, const char* fqdn, MAAT_PLUGIN_EX_DATA* ex_data_array, size_t n_ex_data);
 
 
diff --git a/test/test_maatframe.cpp b/test/test_maatframe.cpp
index f7fd07a..9cfdc5b 100644
--- a/test/test_maatframe.cpp
+++ b/test/test_maatframe.cpp
@@ -380,6 +380,8 @@ TEST(FQDN_Plugin_Table, EX_DATA)
 
 	ret=Maat_fqdn_plugin_get_EX_data(g_feather, table_id, "r3---sn-i3belne6.example2.com", (void**)result, 4);
 	ASSERT_EQ(ret, 2);
+	EXPECT_EQ(result[0]->rule_id, 205);
+	EXPECT_EQ(result[1]->rule_id, 204);
 	for(i=0; i<ret; i++)
 	{
 		fqdn_plugin_EX_free_cb(0, (void**)&(result[i]), 0, NULL);