Arduino WiFi Shield + Adafruit NFC Shield

Hi, i'm new here, so please forgive my posible mistakes.

I'm starting a project based on Arduino Uno Rev3 + Arduino WiFi Shield. I want to add NFC features, so i'm looking for the correct NFC module.

Adafruit NFC Shield seems to be a good option, but it uses pins 4 and 5 for I2C communication.

WiFi Shield uses also pin 4 as SS for the SD card reader included in the shield.

So i wonder if they are compatible or not.

Thank you,
R