HTC Droid Eris :: Getting Screen To Come Back On In Dark

Forgive me if someone else has asked this, but I searched the forum and couldn't find an answer.I understand that the proximity/light sensor turns off the screen when the Eris is next to your ear to prevent "face dailing", etc. And, I understand the screen comes back on when the sensor senses light. Ok, that works fine.BUT, what do you do if you are using the phone in the dark? When I pull the phone away, the screen will not come back on because it does not sense light. For example, trying to delete a voicemail if you're using the phone in the dark. I've tried every button to re-activate the screen, and the only one that will work is the "End" key. And that obviously ends the call.