diff --git a/config/config.go b/config/config.go
index e828f03d..cc7254bb 100644
--- a/config/config.go
+++ b/config/config.go
@@ -376,7 +376,7 @@ func parseRules(cfg *RawConfig, proxies map[string]C.Proxy) ([]C.Rule, error) {
 	rulesConfig := cfg.Rule
 
 	// remove after 1.0
-	if len(rules) == 0 {
+	if len(rulesConfig) == 0 {
 		rulesConfig = cfg.RuleOld
 	}