diff --git a/left/src/config.h b/left/src/config.h
index 83e512b..6cd1516 100644
--- a/left/src/config.h
+++ b/left/src/config.h
@@ -1,8 +1,4 @@
 #ifndef __CONFIG_H__
 #define __CONFIG_H__
 
-// Macros:
-
-//    #define DEBUG_OVER_SPI
-
 #endif
diff --git a/left/src/debug_over_spi.c b/left/src/debug_over_spi.c
index bd5524b..d1665d8 100644
--- a/left/src/debug_over_spi.c
+++ b/left/src/debug_over_spi.c
@@ -1,10 +1,6 @@
-#ifdef DEBUG_OVER_SPI
-
 #include "debug_over_spi.h"
-#include "config.h"
 #include "fsl_gpio.h"
 
-
 #define EXAMPLE_SPI_MASTER (SPI0)
 #define EXAMPLE_SPI_MASTER_SOURCE_CLOCK (kCLOCK_BusClk)
 
@@ -52,5 +48,3 @@ void DebugOverSpi_Send(uint8_t *tx, uint8_t len)
         SPI_MasterTransferNonBlocking(EXAMPLE_SPI_MASTER, &handle, &xfer);
     }
 }
-
-#endif
diff --git a/left/src/debug_over_spi.h b/left/src/debug_over_spi.h
index 4fcd263..a97d8ae 100644
--- a/left/src/debug_over_spi.h
+++ b/left/src/debug_over_spi.h
@@ -1,5 +1,3 @@
-#ifdef DEBUG_OVER_SPI
-
 #ifndef __DEBUG_OVER_SPI_H__
 #define __DEBUG_OVER_SPI_H__
 
@@ -27,8 +25,3 @@
     void DebugOverSpi_Send(uint8_t *tx, uint8_t len);
 
 #endif
-
-#else
-    #define DebugOverSpi_Init()
-    #define DebugOverSpi_Send(tx, len)
-#endif
diff --git a/left/src/init_peripherals.c b/left/src/init_peripherals.c
index e39916e..79ec3dd 100644
--- a/left/src/init_peripherals.c
+++ b/left/src/init_peripherals.c
@@ -9,7 +9,6 @@
 #include "led_pwm.h"
 #include "slave_protocol_handler.h"
 #include "i2c_watchdog.h"
-#include "debug_over_spi.h"
 #include "main.h"
 
 i2c_slave_config_t slaveConfig;
@@ -23,7 +22,6 @@ static void i2cSlaveCallback(I2C_Type *base, i2c_slave_transfer_t *xfer, void *u
 {
     dosBuffer[0] = xfer->event;
     dosBuffer[1] = userData;
-    DebugOverSpi_Send(dosBuffer, 2);
 
     switch (xfer->event) {
         case kI2C_SlaveTransmitEvent:
@@ -86,6 +84,5 @@ void InitPeripherals(void)
     InitLedDriver();
     TestLed_Init();
     LedPwm_Init();
-    DebugOverSpi_Init();
     initI2c();
 }
diff --git a/left/src/main.c b/left/src/main.c
index a1246de..f362a52 100644
--- a/left/src/main.c
+++ b/left/src/main.c
@@ -15,11 +15,7 @@ key_matrix_t keyMatrix = {
         {PORTB, GPIOB, kCLOCK_PortB, 11},
         {PORTA, GPIOA, kCLOCK_PortA,  6},
         {PORTA, GPIOA, kCLOCK_PortA,  8},
-#ifdef DEBUG_OVER_SPI
-        {PORTA, GPIOA, kCLOCK_PortA,  8},
-#else
         {PORTB, GPIOB, kCLOCK_PortB,  0},
-#endif
         {PORTB, GPIOB, kCLOCK_PortB,  6},
         {PORTA, GPIOA, kCLOCK_PortA,  3},
         {PORTA, GPIOA, kCLOCK_PortA, 12}
@@ -28,11 +24,7 @@ key_matrix_t keyMatrix = {
         {PORTB, GPIOB, kCLOCK_PortB,  7},
         {PORTB, GPIOB, kCLOCK_PortB, 10},
         {PORTA, GPIOA, kCLOCK_PortA,  5},
-#ifdef DEBUG_OVER_SPI
-        {PORTA, GPIOA, kCLOCK_PortA,  5},
-#else
         {PORTA, GPIOA, kCLOCK_PortA,  7},
-#endif
         {PORTA, GPIOA, kCLOCK_PortA,  4}
     }
 };