Millwall boss Alex Neil said his team's defending earned them an important win away to Preston North End.
Neil told BBC Radio London: "It certainly wasn't one for the football purists, the conditions and the pitch make it difficult to play, but in real contrast to the Birmingham game it was a very different challenge.
"I thought we stood up to it brilliantly. I thought we deserved the first goal, we should have scored before that, and we had two or three chances after that in the first half as well.
"In the second half it was always going to be a case of who got the next goal. To be fair to Preston, they threw everything at us but I thought we defended brilliantly."