An Alberta man has lost his appeal of his conviction for killing his business partner.

Murray McClenaghan was found guilty of second-degree murder in the death of his business partner, Donald Hanscom, in 2004.

McClenaghan also received a lifetime ban from guns, ammunition and explosives.

Court documents reveal McClenaghan appealed on the grounds that the trial judge was not fair in his summary of the evidence.

The jury heard there was tension between McClenaghan and Hanscom because their business was doing badly.