diff --git a/docs-en/05-develop/01-connect/03-go.md b/docs-en/05-develop/01-connect/03-go.md
index d3b142392cc16b852a4b574d2a16ebaf7dddbadb..5b5519a8b72013aaeebf0b0f0bffc2e807ea9c98 100644
--- a/docs-en/05-develop/01-connect/03-go.md
+++ b/docs-en/05-develop/01-connect/03-go.md
@@ -47,7 +47,7 @@ import (
 )
 
 func main() {
-    dsn := os.Getenv("TDENGINE_CLOUD_TOKEN")
+    dsn := os.Getenv("TDENGINE_GO_DSN")
     taos, err := sql.Open("taosRestful", dsn)
     if err != nil {
         fmt.Println("failed to connect TDengine, err:", err)