Nicky Robinson kick-started Gloucester's season as he stung Aviva Premiership rivals Wasps with an inspired goalkicking performance at Kingsholm.
The Wales international fly-half, dropped to replacement duty following last weekend's tame defeat against London Irish, kicked two late 53-metre penalties under immense pressure as the hosts clinched a 22-20 success.
Gloucester's Samoan centre Eliota Fuimaono-Sapolu scored a first-half try, while Tim Taylor kicked 11 points before making way for Robinson at the interval.
Wasps replied with touchdowns by Dan Ward-Smith and Joe Simpson, with Dave Walder slotting two penalties and two conversions before he missed a late, long-range penalty that would have clinched victory.
Gloucester had already lost to Exeter and Irish in recent weeks, either side of an unimpressive home win against bottom club Leeds Carnegie, but Robinson held his nerve just when it looked as though Wasps might edge the verdict.
Although the lead changed hands seven times and a late goalkicking exchange ensured a dramatic finish, the game was riddled with mistakes and dominated by referee Andrew Small's fussy officiating.
But Gloucester will not particularly care how they conjured the win, while Wasps must now reflect on a below-par opening month that has realised one victory, one draw and two defeats.