Wrong activation e-mail when registering user with username "><"

Register user with nickname "><" (without quotes)

AR: Ive got this letter on my mailbox:

Dear >Dear >

This mail is to confirm your registration at JTalks forum.
Please follow the link below to activate your account. This link is valid for 24 hours.
Also note, that account will be deleted automatically in 24 hours if not activated.
Activation link: http://deploy.jtalks.org/jcommune/user/activate/63bcccc0-9f40-4df6-a380-b1f00d4e4e8d - http://deploy.jtalks.org:80/jcommune/user/activate/63bcccc0-9f40-4df6-a380-b1f00d4e4e8d

Best regards,

Jtalks forum.

ER: Getting correct e-mail