The invention relates to an arrangement (1) for supplying drive signals to a plurality of windings of a multi-phase d.c. motor (8). The arrangement comprises a multi-phase inverter (10) which supplies the drive signals to the windings (2, 4, 6); a phase detector (40) which samples the back-emf signal of this winding in order to obtain a phase-error signal; a low-pass filter (42) which generates a control signal in dependence upon the phase-error signal; and a controllable oscillator (44) which generates a frequency signal whose phase and frequency depend on the control signal, the timing with which the multi-phase inverter (10) supplies the drive signals to the windings (2, 4, 6) being dependent on the frequency signal. The arrangement further comprises a masking circuit (70) for inhibiting the further processing of the phase-error signal by the low-pass filter (42) temporarily, at least during the presence of a flyback signal in the phase-error signal, as a result of which the processing of the flyback pulses present in the phase-error signal is inhibited.