Feline Curiosity (Star Munchkin) Question

[Munchkinator]

We've been playing the Curiosity power for the Feline race like this:

Feline kicks down door and finds something other than a monster.

Feline puts door card in hand (or suffers curse or whatever).

Feline kicks down door again and proceeds normally.

Now, the Feline basically gets two cards out of this. Is this right? Or should the first door card be discarded (unless it is a curse)?

Hope that was clear. Help please?