diff --git a/Pico/Memory.c b/Pico/Memory.c
index fde2e4a8..dbf0118a 100644
--- a/Pico/Memory.c
+++ b/Pico/Memory.c
@@ -815,7 +815,7 @@ int ym2612_write_local(u32 a, u32 d, int is_from_z80)
             //ym2612.OPN.ST.TBC  = (256-d)<<4;
             //ym2612.OPN.ST.TBC *= 18;
             //ym2612.OPN.ST.TBT  = 0;
-            timer_b_step = timer_b_offset = 262840 * (256 - d); // 262881
+            timer_b_step = timer_b_offset = 262800 * (256 - d); // 262881
             if (ym2612.OPN.ST.mode & 2) {
               int cycles = is_from_z80 ? z80_cyclesDone() : cycles_68k_to_z80(SekCyclesDone());
               timer_b_next_oflow = (cycles << 8) + timer_b_step;