diff --git a/cmd/config/decode.go b/cmd/config/decode.go
index 48594e8..af0f602 100644
--- a/cmd/config/decode.go
+++ b/cmd/config/decode.go
@@ -13,8 +13,8 @@ import (
 )
 
 type NetConfig struct {
-    Gateway string `yaml:"gateway"` // network gateway
-    Address string `yaml:"address"` // network address
+    Gateway string `yaml:"gateway" json:"gateway"` // network gateway
+    Address string `yaml:"address" json:"address"` // network address
 }
 
 type RawConfig struct {
diff --git a/cmd/proxy/config.go b/cmd/proxy/config.go
index 508b891..86afa8f 100644
--- a/cmd/proxy/config.go
+++ b/cmd/proxy/config.go
@@ -44,6 +44,9 @@ type inboundObject struct {
 }
 
 func loadLogConfig(logLevel string, logDir string) string {
+    if logLevel == "" {
+        logLevel = "warning" // using warning level without log output
+    }
     if logLevel != "debug" && logLevel != "info" &&
         logLevel != "warning" && logLevel != "error" && logLevel != "none" {
         log.Warningf("Unknown log level -> %s", logLevel)
diff --git a/cmd/proxy/main.go b/cmd/proxy/main.go
index b2ebfe8..6f62d3b 100644
--- a/cmd/proxy/main.go
+++ b/cmd/proxy/main.go
@@ -7,7 +7,7 @@ import (
 )
 
 type Config struct {
-    Log   string         `yaml:"log" json:"json"`
+    Log   string         `yaml:"log" json:"log"`
     Core  string         `yaml:"core" json:"core"`
     Http  map[string]int `yaml:"http" json:"http"`
     Socks map[string]int `yaml:"socks" json:"socks"`