diff --git a/src/escpos/escpos.py b/src/escpos/escpos.py
index 8d1fd81..04c1d80 100644
--- a/src/escpos/escpos.py
+++ b/src/escpos/escpos.py
@@ -80,7 +80,7 @@ class Escpos(object):
         """
         pass
 
-    def _read(self, msg):
+    def _read(self):
         """ Returns a NotImplementedError if the instance of the class doesn't override this method.
         :raises NotImplementedError
         """