diff --git a/firmware/esp32/overland-controller/config.h b/firmware/esp32/overland-controller/config.h
index 9b20f0b..65d1527 100644
--- a/firmware/esp32/overland-controller/config.h
+++ b/firmware/esp32/overland-controller/config.h
@@ -16,7 +16,7 @@
 // GPIO4 is used by the LilyGO relay shift-register OE pin.
 #define ONEWIRE_PIN 15
 
-#define IGNITION_PIN 34
+#define IGNITION_PIN 39
 
 #define OLED_I2C_SDA_PIN 21
 #define OLED_I2C_SCL_PIN 22