Mark Warburton admits Brentford shot themselves in the foot after they slumped to defeat against promotion-rivals Ipswich Town.
The Bees fell behind to Daryl Murphy’s goal after just 19 seconds and were 3-0 down by the half-hour mark.
Substitute Sam Saunders’ second-half brace sandwiched a goal by former Brentford defender Tommy Smith as the Tractor Boys ran out 4-2 winners at Griffin Park.
Warburton’s suffered only their third home defeat in the last calendar year, but says they only have themselves to blame.
He said: “We dominated possession but you can’t go three down to teams of that quality and give yourself a mountain to climb.
“It was three goals from three errors and I don’t mind mistakes but we have to learn from it. We weren’t muscled out of it but we were uncharacteristically sloppy.
“Apart from the four goals I can’t remember a save that Button has had to make. We were a little bit tentative and maybe that first-minute goal unnerved a couple of our players.”