An employee of the business told police the robber came into the store just before 11:30 p.m., pointed a gun at him and demanded money.
The robber went behind the counter, and the employee pulled out the cash drawer and gave it to the man, who then left.
No arrests have been made. Police did look at video surveillance of the robbery.
If you have any information about this robbery, call South Bend Police at 574-235-9201.