Error with RTL8187 Driver

I am introducing myself to Wireless cracking but getting an error I don't understand.

airmon-ng stop “wlan0″.
ifconfig “wlan0″ down
macchanger –mac 00:11:22:33:44:55 wlan0

Springs an error: Set device: no such device.

Any information I could find on this error is several years old.

any help?

TIA

Thread moved.

It's either

Code:

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machcanger --mac 00:11:22:33:44:55 wlan0

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or

Code:

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macchanger -m 00:11:22:33:44:55 wlan0

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Man page explains the usage (man macchanger)