Is That Even "Armed" Robbery?

Okay so the guy had a knife, but it was a butter knife. And the motel clerk didn't think much of it either. Per the Rapid City Journal [South Dakota]:
The front desk clerk told police a man pointed a butter knife at her and asked her for money. When she refused, the man left the hotel, walking west, police said.
The clerk gave police a detailed description of the man. Police searched the area, and about 7 p.m., an officer noticed a man matching the description of the robber standing outside an apartment in the 900 block of Fillmore Street, just north of the hotel. Police recovered a knife they believe was used in the attempted robbery.
Police arrested Robert Lee McKinney, 34, of Rapid City. He has been charged with first-degree robbery and is in custody at Pennington County Jail.What's he looking at?
First-degree robbery is a class 2 felony with a maximum penalty upon conviction of 25 years imprisonment and a $50,000 fine.Shazam!
Washington DC Injury Lawyer John B. Mesirow represents injured accident victims in Washington DC, Maryland and Northern Virginia. His practice includes Car Accidents, Bike Accident, Boating Accident, Brain Injury, Construction Accident, Dog Bite, Medical Malpractice, Motorcycle Accident, Trucking Accident and Wrongful Death cases. John Mesirow was named a "Top Lawyer" by Washingtonian magazine and aggressively represents his clients. You can contact him online or by phone at 866-463-0303 or 202-463-0303.