Bolton manager Gary Megson has expressed his disappointment at the display which saw his side lose 1-0 to Portsmouth.
The Trotters were second best throughout the afternoon and barely had a shot on goal before Kanu claimed all three points for Pompey late on.
The day had begun with Bolton fans confident of reaching the magic 40-point mark, but it instead ended with renewed fears over the prospect of securing survival.
"It was a poor result for us," Megson conceded to Sky Sports News.
"The performance was not good enough, not coming up to the standard that we've set for most of the time this season and certainly not what we need at this stage of the season.
"It's purely and simply about results and for the life of me and probably everybody else I thought that was going to be a 0-0, and yet we've probably been responsible for our own downfall."
Indeed, Bolton conceded late on in rather bizarre fashion as a whipped corner was bundled in over the body of Jussi Jaaskelainen by substitute Kanu.
Infuriated by the manner of the goal, Megson concluded: "It's a poor corner, there's no height on it and for it to go in like that is just not what I would expect."