diff --git a/config/config.go b/config/config.go
index 80c0f1d5b..26c2e5cee 100644
--- a/config/config.go
+++ b/config/config.go
@@ -161,7 +161,7 @@ type ServiceConfig struct {
 	TLS *TLS `mapstructure:"tls"`
 
 	// UseH2C enables h2c support.
-	UseH2C bool `json:"use_h2c"`
+	UseH2C bool `mapstructure:"use_h2c"`
 
 	// run lura in debug mode
 	Debug     bool `mapstructure:"debug_endpoint"`
diff --git a/config/config_test.go b/config/config_test.go
index a9db9c741..0149c301d 100644
--- a/config/config_test.go
+++ b/config/config_test.go
@@ -211,7 +211,7 @@ func TestConfig_init(t *testing.T) {
 		t.Error(err.Error())
 	}
 
-	if hash != "NILRcvZq9y+zinGtRRfG+Zm1ORVE3gI2gjpcgDI3A/Q=" {
+	if hash != "GdZTJtCn9ZHj3iBR1ZxmZL65HjbTCU8HhbDG8YWudAo=" {
 		t.Errorf("unexpected hash: %s", hash)
 	}
 }