Carlos Carvalhal said his team would react positively after the Owls’ 4-1 defeat away against Bristol City.
Wednesday went 2-0 down early on despite having the first of the game’s chances in the opening exchanges.
Penalties either side of half time put City 4-0 up, but the Owls managed to grab a consolation goal when Ross Wallace’s free kick deflected in off the post, and ex-Wednesday goalkeeper Richard O’Donnell, to make the final score 4-1.
Carvalhal said: “Today we had an off day.
“We had chances early in the game and we thought we will score soon.
“But in the Championship, of course, this can never be certain and then all of the teams can punish you.
“We deserved to be 3-0 down at half time as we were not playing like we normally do.
“In the second half the players showed good attitude and played more like what we can do and that is not easy when you are losing 3-0.”
Wednesday maintained their advantage in the play-offs despite the Robins setback and Carvalhal is keen to focus on the next game as always.
He added: “Our next two games are at home, the first one is against Ipswich and so this is the most important.
“We want to tell the fans who travelled today that we lost the game, but we didn’t lose the team, we are always together.
“I can tell them that we will react.”