The charge related to a gun seized from the 82-year-old's luggage in Las Vegas's McCarran International Airport in July.
The gun was confiscated and Lewis detained after police accused the US star of carrying a concealed weapon without a permit.
The charge was dropped on Friday after lawyers agreed to let Lewis off without fines, reports The Associated Press.
His lawyer, Ross Goodman, said the quick resolution was "a good result for a great guy".
The comedian had earlier told Entertainment Tonight that the gun was given to him during a telethon for the Muscular Dystrophy Association.
"I put it in that travelling case, and I hadn't travelled since that telethon 'til that day," he said.