Apple :: Expresscard Flash Reader

I bought one of these for my mac , it fits in the slot fine and you have to push it in until it clicks and is flush with the mac, but when i insert a flash memory card and pull the card out it pulls the entire reader out as well.

Now normally to remove the expresscard reader you press it in until it clicks and is spring loaded and pops out so you can remove it.

But why when i remove a snug fitting memory card is the entire reader pulling out , unless i use one hand to keep the reader in place as i use the other hand to pull out the memory card , is this normal?