The present invention relates to an installation assembly with which a motor vehicle antenna can be fastened to the body of a motor vehicle without an additional tool. The installation assembly includes a base plate from which at least one fastening section to be introduced through an opening of the body into the interior thereof projects. Furthermore, the installation assembly includes a latch body which is to be arranged in the interior of the body, which cooperates with the fastening section and which has a support section which is spaced apart from the base plate by a clear spacing.