A complaint about cannabis smoke caused a man to be clobbered with a metal pole, a court heard.
Vitalij Plechov raised the issue with fellow resident Paul Barton at their flats in Upper Church Road, Weston-super-Mare.
Bristol Crown Court heard Barton grabbed a 900g fishing rod support, bashed Mr Plechov's door and then struck him on the head.
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Barton, 45, pleaded guilty to causing damage but a jury convicted him of wounding with intent after the incident in June last year.
The recorder Mr David Chidgey jailed him for four-and-a-half years.
He told Barton: "There was a complaint about smoking cannabis in the flats.
"You had your door open, your's was a ground floor flat.
"You didn't react well.
"You felt it was your right to do what you wanted.
"That was a mistake.
"You obtained the fishing rod support, which was relatively heavy, and without provocation you pursued the victim, you banged on his door and you hit him on the head.
"It caused a nasty wound."
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The court heard Barton had previous convictions for wounding, robbery and supplying cocaine.
Barry White, defending, told the court: "It was not planned, it happened quickly.
"Mr Barton was at his home and Mr Plechov came to his door.
"A weapon was used, it was simply to hand.
"It was sitting by the front door."
The court heard Barton had abstained from drugs for some time and had expressed remorse.
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