diff --git a/src/board/system76/common/peci.c b/src/board/system76/common/peci.c
index dac2a13..0e2e922 100644
--- a/src/board/system76/common/peci.c
+++ b/src/board/system76/common/peci.c
@@ -127,8 +127,8 @@ uint8_t peci_get_fan_duty(void) {
     uint8_t duty;
 
 #if USE_S0IX
-    // Use PECI if CPU is not in C10 state
-    peci_on = gpio_get(&CPU_C10_GATE_N);
+    // Use PECI if platform is not in CS
+    peci_on = gpio_get(&SLP_S0_N);
 #else // USE_S0IX
     // Use PECI if in S0 state
     peci_on = power_state == POWER_STATE_S0;
diff --git a/src/board/system76/common/power.c b/src/board/system76/common/power.c
index 65fe840..5ba4624 100644
--- a/src/board/system76/common/power.c
+++ b/src/board/system76/common/power.c
@@ -318,7 +318,7 @@ void power_set_limit(void) {
     static bool last_power_limit_ac = true;
     // We don't use power_state because the latency needs to be low
 #if USE_S0IX
-    if (gpio_get(&CPU_C10_GATE_N)) {
+    if (gpio_get(&SLP_S0_N)) {
 #else
     if (gpio_get(&BUF_PLT_RST_N)) {
 #endif
@@ -552,7 +552,7 @@ void power_event(void) {
     uint32_t time = time_get();
     if (power_state == POWER_STATE_S0) {
 #if USE_S0IX
-        if (!gpio_get(&CPU_C10_GATE_N)) {
+        if (!gpio_get(&SLP_S0_N)) {
             // Modern suspend, flashing green light
             if ((time - last_time) >= 1000) {
                 gpio_set(&LED_PWR, !gpio_get(&LED_PWR));