A horn assembly for a motor vehicle includes a sound generating member, a housing having a first opening connected to the sound generating member and a second opening to disperse sound from the sound generating member, and a deflector to restrict ingress of liquid into the second opening, while allowing egress of sound from the second opening. The deflector includes a base member having a first end coupled to the housing and a second end defining a portion of a primary opening to direct dispersement of sound from the sound generating member. The deflector includes a first lateral wall and a second lateral wall, where each lateral wall is coupled to the base member and extends toward the housing. A distal edge of each of the first and second lateral walls is spaced apart from the housing to form secondary openings allowing dispersement of sound from the housing.