diff --git a/firmware/config/boards/microrusefi/board.mk b/firmware/config/boards/microrusefi/board.mk
index 74812256b3..1c83f3aa99 100644
--- a/firmware/config/boards/microrusefi/board.mk
+++ b/firmware/config/boards/microrusefi/board.mk
@@ -31,6 +31,12 @@ DDEFS += $(VAR_DEF_ENGINE_TYPE)
 # This board can capture SENT
 DDEFS += -DEFI_SENT_SUPPORT=TRUE
 
+# This board has LIN/K-line interface
+DDEFS += -DEFI_KLINE=TRUE
+DDEFS += -DKLINE_SERIAL_DEVICE_RX=Gpio::D9 -DKLINE_SERIAL_DEVICE_TX=Gpio::D8
+DDEFS += -DKLINE_SERIAL_DEVICE=SD3
+DDEFS += -DSTM32_SERIAL_USE_USART3=TRUE
+
 # We are running on microRusEFI hardware!
 DDEFS += -DHW_MICRO_RUSEFI=1
 
diff --git a/firmware/hw_layer/kline.cpp b/firmware/hw_layer/kline.cpp
index 05eb0af542..fd7fa5559d 100644
--- a/firmware/hw_layer/kline.cpp
+++ b/firmware/hw_layer/kline.cpp
@@ -3,7 +3,7 @@
 #include "hellen_meta.h"
 
 #ifdef EFI_KLINE
-static SerialDriver* const klDriver = KLINE_SERIAL_DEVICE;
+static SerialDriver* const klDriver = &KLINE_SERIAL_DEVICE;
 static THD_WORKING_AREA(klThreadStack, UTILITY_THREAD_STACK_SIZE);
 
 static int totalBytes = 0;
diff --git a/firmware/hw_layer/kline.h b/firmware/hw_layer/kline.h
index 447fd38841..491885f029 100644
--- a/firmware/hw_layer/kline.h
+++ b/firmware/hw_layer/kline.h
@@ -1,9 +1,15 @@
 #pragma once
 
 
-#define KLINE_SERIAL_DEVICE (&SD2)
+#ifndef KLINE_SERIAL_DEVICE
+#define KLINE_SERIAL_DEVICE SD2
+#endif
+#ifndef KLINE_SERIAL_DEVICE_RX
 #define KLINE_SERIAL_DEVICE_RX H144_UART2_RX
+#endif
+#ifndef KLINE_SERIAL_DEVICE_TX
 #define KLINE_SERIAL_DEVICE_TX H144_UART2_TX
+#endif
 
 // The standard transmission rate
 #define KLINE_BAUD_RATE 10400