Pseye errors : libUsb bug

Hi, I’m trying to use the pseye library on my pi.
At this line :

ps3eye.init(60, PS3Eye.Resolution.VGA);

I’ve got this error

LibUsbException: USB error 6: error LibUsb.claimInterface: Resource busy

I found this,

sudo rmmod gspca_ov534

I don’t know why but it work.
There is a way to do it forever as my Pi start ?