diff --git a/joycontrol/controller_state.py b/joycontrol/controller_state.py
index 7eef5b7..8dadd55 100644
--- a/joycontrol/controller_state.py
+++ b/joycontrol/controller_state.py
@@ -177,7 +177,7 @@ class ButtonState:
 
     def __iter__(self):
         """
-        @returns iterator over the button bytes
+        :returns iterator over the button bytes
         """
         yield self._byte_1
         yield self._byte_2
diff --git a/joycontrol/ir_nfc_mcu.py b/joycontrol/ir_nfc_mcu.py
index e618edd..50b387b 100644
--- a/joycontrol/ir_nfc_mcu.py
+++ b/joycontrol/ir_nfc_mcu.py
@@ -115,7 +115,7 @@ class IrNfcMcu:
                 self._bytes[5] = 9
                 self._bytes[6] = 0x31
                 self._bytes[7] = 0
-        elif self.get_action() == Action.READ_TAG or self.get_action() == Action.READ_TAG_2:
+        elif self.get_action() in (Action.READ_TAG, Action.READ_TAG_2):
             self._bytes[0] = 0x3a
             self._bytes[1] = 0
             self._bytes[2] = 7
@@ -131,7 +131,7 @@ class IrNfcMcu:
             else:
                 data = bytes.fromhex('02000927')
                 copyarray(self._bytes, 3, data)
-                copyarray(self._bytes, 3 + len(data), self._nfc_content[245:])
+                copyarray(self._bytes, 3 + len(data), self._nfc_content[245:540])
                 self.set_action(Action.READ_FINISHED)
         elif self.get_action() == Action.READ_FINISHED:
             self._bytes[0] = 0x2a