Problem to MFRC522

[BPanupong]

Hi All;

I have a problem with MFRC522. I am setting "NRSTPD" to 

|sical | V | Mode | Name | wPi | BCM |
| 22 | 1 | OUT | GPIO. 6 | 6 | 25 |

I would like to know why I can't run Read.py. It's show the message below

Traceback (most recent call last):
File "Read.py", line 41, in
MIFAREReader = MFRC522.MFRC522()
File "/home/pi/MFRC522-python/MFRC522.py", line 133, in __ init __
GPIO.setup(self.NRSTPD, GPIO.OUT)
ValueError: The channel sent is invalid on a Raspberry Pi

Could you please advice me?