diff --git a/common/log/log.go b/common/log/log.go
index 0c7b3160a..0cff1a06c 100644
--- a/common/log/log.go
+++ b/common/log/log.go
@@ -4,6 +4,8 @@ import (
 	"fmt"
 	"io"
 	"os"
+
+	"github.com/v2ray/v2ray-core/common/platform"
 )
 
 const (
@@ -35,8 +37,7 @@ func (l *streamLogger) WriteLog(prefix, format string, v ...interface{}) {
 	} else {
 		data = fmt.Sprintf(format, v...)
 	}
-	l.writer.Write([]byte(prefix + data))
-	l.writer.Write([]byte{'\n'})
+	l.writer.Write([]byte(prefix + data + platform.LineSeparator()))
 }
 
 var (
diff --git a/common/platform/others.go b/common/platform/others.go
index a0d25a5e4..0bd7ee77d 100644
--- a/common/platform/others.go
+++ b/common/platform/others.go
@@ -6,11 +6,10 @@ import (
 	"os"
 )
 
-type otherPlatformEnvironment struct {
-}
-
-var environmentInstance = &otherPlatformEnvironment{}
-
-func (e *otherPlatformEnvironment) ExpandEnv(s string) string {
+func ExpandEnv(s string) string {
 	return os.ExpandEnv(s)
 }
+
+func LineSeparator() string {
+	return "\n"
+}
diff --git a/common/platform/platform.go b/common/platform/platform.go
deleted file mode 100644
index a35f0fc4b..000000000
--- a/common/platform/platform.go
+++ /dev/null
@@ -1,10 +0,0 @@
-// Package platform provides platform specific functionalities.
-package platform
-
-type environment interface {
-	ExpandEnv(s string) string
-}
-
-func ExpandEnv(s string) string {
-	return environmentInstance.ExpandEnv(s)
-}
diff --git a/common/platform/windows.go b/common/platform/windows.go
index 4a6ae7b82..7fc1f90d7 100644
--- a/common/platform/windows.go
+++ b/common/platform/windows.go
@@ -2,16 +2,11 @@
 
 package platform
 
-import (
-	"os"
-)
-
-type windowsEnvironment struct {
-}
-
-var environmentInstance = &windowsEnvironment{}
-
-func (e *windowsEnvironment) ExpandEnv(s string) string {
+func ExpandEnv(s string) string {
 	// TODO
 	return s
 }
+
+func LineSeparator() string {
+	return "\r\n"
+}