diff --git a/README.md b/README.md
index bcea013..cc4d685 100644
--- a/README.md
+++ b/README.md
@@ -32,6 +32,3 @@ Flags:
   -w, --overwrite                 Overwrite source file.
       --about                     Show about.
 ```
-
-## Advices
-For converting Simplified Chinese texts into UTF-8, set source encoding as gb18030 instead of gbk or gb2312 for maximum compatibility.
diff --git a/transcode.go b/transcode.go
index 7ccb321..47a61d8 100644
--- a/transcode.go
+++ b/transcode.go
@@ -13,6 +13,7 @@ import (
 	"github.com/gogs/chardet"
 	"golang.org/x/text/encoding"
 	"golang.org/x/text/encoding/htmlindex"
+	"golang.org/x/text/encoding/simplifiedchinese"
 	"golang.org/x/text/transform"
 )
 
@@ -138,6 +139,10 @@ func parseEncoding(encoding string) (enc encoding.Encoding, err error) {
 	if err != nil {
 		err = fmt.Errorf("invalid encoding: %s", encoding)
 	}
+	switch enc {
+	case simplifiedchinese.GBK:
+		enc = simplifiedchinese.GB18030
+	}
 	return
 }
 func detectEncoding(r *bufio.Reader) (string, error) {