washer on oil plug bolt

JUST TO GIVE A HEADS UP TO ALL THOSE THAT CHANGE THERE OIL. I UNSREWED THE OIL PAN DRAIN PLUG AND DROPPED IT IN THE OIL PAN I WAS USEING TO COLLECT THE OIL .WHEN I PUT THE BOLT BACK IN AND ADDED OIL .I PULLED THE USED OIL CONTAINER OUT FROM UNDERNEATH THE CAR AND SURPRISE! THERES THE COPPER WASHER THAT FELL OFF .:banghead: SO NOW I GOTTA WAIT TO PUT IT BACK ON .HOPE IT DOESNT LEAK. 2006 1.4 SE