diff --git a/stm-firmware/safety/safety-controller.c b/stm-firmware/safety/safety-controller.c
index cb3c222..21305f1 100644
--- a/stm-firmware/safety/safety-controller.c
+++ b/stm-firmware/safety/safety-controller.c
@@ -329,7 +329,7 @@ static const struct crc_monitor_register misc_config_crc_regs[] = {
 	/* Check vector table offset */
 	CRC_MON_REGISTER_ENTRY(SCB->VTOR, 0xFFFFFFFF, 4),
 	/* Check system tick configuration */
-	CRC_MON_REGISTER_ENTRY(SysTick->CTRL, 0xFFFFFFFF, 4),
+	CRC_MON_REGISTER_ENTRY(SysTick->CTRL, SysTick_CTRL_CLKSOURCE_Msk | SysTick_CTRL_TICKINT_Msk | SysTick_CTRL_ENABLE_Msk, 4),
 	CRC_MON_REGISTER_ENTRY(SysTick->LOAD, 0xFFFFFFFF, 4),
 	CRC_MON_REGISTER_SENTINEL
 };