Dembele struck in yesterday's 3-2 win at Rayo Vallecano, though it was noticeable none of his teammates congratulated the Frenchman upon his goal.
Asked about the attacker's situation, Valverde said: "Was Dembélé congratulated by anyone? We were happy.
"But our idea is that a draw was not good. We always want to win. And the goal of Dembélé served to return to equality.
"We are delighted with his purpose and that of everyone else."