diff --git a/testing/scenarios/data/test_4_client.json b/testing/scenarios/data/test_4_client.json
index 94723c87..6c6d5878 100644
--- a/testing/scenarios/data/test_4_client.json
+++ b/testing/scenarios/data/test_4_client.json
@@ -1,7 +1,7 @@
 {
   "port": 50030,
   "log": {
-    "loglevel": "debug"
+    "loglevel": "info"
   },
   "inbound": {
     "listen": "127.0.0.1",
diff --git a/testing/scenarios/data/test_4_server.json b/testing/scenarios/data/test_4_server.json
index c2a2300c..3d0fc550 100644
--- a/testing/scenarios/data/test_4_server.json
+++ b/testing/scenarios/data/test_4_server.json
@@ -1,7 +1,7 @@
 {
   "port": 50031,
   "log": {
-    "loglevel": "debug"
+    "loglevel": "info"
   },
   "inbound": {
     "listen": "127.0.0.1",
diff --git a/testing/scenarios/server_env.go b/testing/scenarios/server_env.go
index 8941552a..f373c787 100644
--- a/testing/scenarios/server_env.go
+++ b/testing/scenarios/server_env.go
@@ -5,6 +5,7 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
+	"runtime"
 
 	_ "github.com/v2ray/v2ray-core/app/router/rules"
 	"github.com/v2ray/v2ray-core/common/log"
@@ -35,7 +36,10 @@ func BuildV2Ray() error {
 	if err != nil {
 		return err
 	}
-	binaryPath = filepath.Join(dir, "v2ray.exe")
+	binaryPath = filepath.Join(dir, "v2ray")
+	if runtime.GOOS == "windows" {
+		binaryPath += ".exe"
+	}
 	cmd := exec.Command("go", "build", "-tags=json", "-o="+binaryPath, filepath.Join("github.com", "v2ray", "v2ray-core", "release", "server"))
 	return cmd.Run()
 }