Slaven Bilic insists West Ham have solved their crowd trouble issues ahead of Monday's rematch with Chelsea.
The EFL Cup clash between the London rivals in October was marred by coin throwing and fighting between rival fans.
But moves to improve the segregation, policing and stewarding have meant that since that night, such ugly scenes have all but disappeared.
Vice-chairman Karren Brady has worked tirelessly to put an end to disorder in the stands, and Bilic is confident she has succeeded.
"It is not that I think it - it is definitely the truth," the Hammers manager said.