Police near Dayton said a 50-year-old man accidentally shot himself in the hand after attending a gun show there.
No one else was injured Saturday afternoon.
The accidental shooting happened outside Hara Arena in suburban Dayton where there was a gun and knife show.
Trotwood police told The Dayton Daily News that the man had just bought a holster and was putting a handgun in it when the gun fired.
Police said a bullet struck a finger on his left hand. They said they did not expect to file any charges.