In this Letter, a novel approach for spatial modulation is presented. The main idea of the proposed approach is to change the active antenna at the middle of the symbol duration. The main advantages of the proposed approach are the improved BER performance and the saving in the number of required transmitter antennas, compared to traditional spatial modulation, generalised spatial modulation, and variable generalised spatial modulation at certain spectral efficiency. The BER performance enhancement of the proposed algorithm is affirmed by Monte-Carlo simulations.