Ctrl+Alt+L => removing spaces before ==

Hello,

I use template tags  in html - for eg

{% if u.username == username %}selected="selected" {% endif %}

but when I do a Ctrl+Alt+L to beautify the code, this happens

{% if u.username== username %}selected="selected" {% endif %}

and on running get the error 

Could not parse the remainder: '==username'

How to instruct Pycharm not to remove the space before ==   on beautifying the code via Ctrl+Alt+L

Thanks

Ajit