With Fulham's next game not until September 13, Hangeland feels it could be costly for his team-mates to slip up against lower league opposition.
The 27-year-old said: "I feel that we didn't perform well at Hull. We repaired that in a way against Arsenal and it was a big three points but really it is all about consistency.
"We face a cup tie now and it is no good getting carried away. After that we are not playing for nearly three weeks because it was supposed to be Manchester United this weekend but they are in the European Super Cup on Friday in Monaco.
"And we don't want to sit it out all that time thinking our last performance was a poor one against a team from a lower division."




