diff --git a/serialport.js b/serialport.js
index 73bc11320..3daf2fe2d 100644
--- a/serialport.js
+++ b/serialport.js
@@ -333,7 +333,7 @@ function SerialPortFactory() {
       // console.log(self.path + ' >> POOL OFFSET: ', self.pool.used);
 
       // console.log(">>REQUEST READ: ", toRead);
-      fs.read(self.fd, self.pool, self.pool.used, toRead, 0, function(err, bytesRead){
+      fs.read(self.fd, self.pool, self.pool.used, toRead, null, function(err, bytesRead){
         var readPool = self.pool;
         var bytesRequested = toRead;
         afterRead(err, bytesRead, readPool, bytesRequested);}