diff --git a/src/soc/intel/jasperlake/pmc.c b/src/soc/intel/jasperlake/pmc.c
index d3607dc..47c3bb1 100644
--- a/src/soc/intel/jasperlake/pmc.c
+++ b/src/soc/intel/jasperlake/pmc.c
@@ -100,7 +100,7 @@
 	 * Disabling ACPI PM timer also switches off TCO
 	 */
 	if (!CONFIG(USE_PM_ACPI_TIMER))
-		pmc_disable_acpi_timer();
+		setbits8(pmc_mmio_regs() + PCH_PWRM_ACPI_TMR_CTL, ACPI_TIM_DIS);
 }
 
 static void pm1_enable_pwrbtn_smi(void *unused)