--- a/src/test/modules/test_misc/t/003_check_guc.pl
+++ b/src/test/modules/test_misc/t/003_check_guc.pl
@@ -19,7 +19,7 @@ my $all_params = $node->safe_psql(
         "SELECT name
       FROM pg_settings
     WHERE NOT 'NOT_IN_SAMPLE' = ANY (pg_settings_get_flags(name)) AND
-       name <> 'config_file'
+       name <> 'config_file' AND name NOT LIKE '%.%'
       ORDER BY 1");