diff --git a/sys/dev/acpica/acpi_hpet.c b/sys/dev/acpica/acpi_hpet.c
--- a/sys/dev/acpica/acpi_hpet.c
+++ b/sys/dev/acpica/acpi_hpet.c
@@ -245,7 +245,8 @@
 	}
 	now = bus_read_4(sc->mem_res, HPET_MAIN_COUNTER);
 	if ((int32_t)(now - t->next + HPET_MIN_CYCLES) >= 0) {
-		fdiv *= 2;
+		if (__predict_false(fdiv *= 2) == 0)
+			fdiv = 1;
 		goto restart;
 	}
 	return (0);