Mourinho calls on Real Madrid to fight-back
Madrid were beaten by the German champions on Wednesday, dropping their first points of the group stages, but remain on course to qualify for the last 16.
Mou said: "We are not used to having so many defeats at the start of season but we need to take a look at the matches. Dortmund played more tightly than we did.
"We have matches in league and cup coming up and we need to go and win those."