diff --git a/lib/index.js b/lib/index.js
index e0fb358..4655611 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -147,7 +147,7 @@ class Parser extends Transform {
     }
     // Normalize option `objname`
     if(options.objname === undefined || options.objname === null || options.objname === false){
-      options.objname = Buffer.from(',')
+      options.objname = undefined
     }else if(Buffer.isBuffer(options.objname)){
       if(options.objname.length === 0){
         throw new Error(`Invalid Option: objname must be a non empty buffer`)