minor matter (?.)

• a little thing
• hardly anything
• inessential
• insignificancy
• marginal matter
• matter of indifference
• mere nothing
• naught
• nihility
• no great matter
• nothing
• nothing in particular
• nothing to signify
• nullity
• paltry affair
• peu de chose
• rien du tout
• scarcely anything
• technicality
• thing of naught