diff --git a/firmware/config/engines/custom_engine.cpp b/firmware/config/engines/custom_engine.cpp
index 67c4f4755a..cf96130936 100644
--- a/firmware/config/engines/custom_engine.cpp
+++ b/firmware/config/engines/custom_engine.cpp
@@ -348,6 +348,9 @@ void setTle8888TestConfiguration(DECLARE_CONFIG_PARAMETER_SIGNATURE) {
 	boardConfiguration->ignitionPins[6] = GPIOC_6;
 	boardConfiguration->ignitionPins[7] = GPIOC_7;
 
+	// sckPin  = GPIOB_3
+	// misoPin = GPIOB_4
+	// mosiPin = GPIOB_5
 	engineConfiguration->tle8888spiDevice = SPI_DEVICE_1;
 
 	// PB3 is nicely both SWO and SPI1 SCK so logic analyzer could be used on SWO header