It happened early Saturday morning as the victim was opening up Stough Street Grocery.
Investigators say the suspect followed him inside, hit the clerk in the face and then took his wallet.
Authorities say this is the first time in the store's 30-year history that it's been robbed. The suspect got away on foot.
He’s described as a black man in his late 20's to early 30's. He's approximately 5 foot 11 inches tall and weighs between 190 to 200 pounds. At the time of the hold up he was wearing a white shirt and black pants.
If you have any information you're asked to call the Dothan Police Department at 615-3604.