With London rivals Arsenal and Tottenham still in the mix for top-four finishes in the Premier League, Ivanovic is taking nothing for granted as his team also chase FA Cup and Europa League glory.
The versatile defender said: "In this stage of the season the number of games cannot be an excuse. You have to play every game like a final.
"This was an important three points and we are in a good way. We have to carry this on to the end of the season."