Gerakan president Datuk Seri Mah Siew Keong dismissed talk of a rift between Prime Minister Datuk Seri Najib Tun Razak and his deputy Datuk Seri Dr Ahmad Zahid Hamidi after the appointment of Datuk Seri Hishammuddin Hussein as Special Functions Minister, saying that he knows both Hishammuddin and Dr Ahmad Zahid well and there is no problem between them.