diff --git a/left/src/bootloader_config.c b/left/src/bootloader_config.c
index f0db0b0..aa7ab58 100644
--- a/left/src/bootloader_config.c
+++ b/left/src/bootloader_config.c
@@ -2,10 +2,10 @@
 #include "i2c_addresses.h"
 
 __attribute__((used, section(".BootloaderConfig"))) const bootloader_config_t BootloaderConfig = {
-    .tag = 0x6766636B,                                            // Magic Number
+    .tag = BOOTLOADER_TAG,
     .enabledPeripherals = ENABLE_PERIPHERAL_I2C,
     .i2cSlaveAddress = I2C_ADDRESS_LEFT_KEYBOARD_HALF_BOOTLOADER,
     .peripheralDetectionTimeoutMs = 300,
-    .clockFlags = 0xFF,                                           // Disable High speed mode
-    .clockDivider = 0xFF,                                         // Use clock divider (0)
+    .clockFlags = 0xFF,    // Disable High speed mode
+    .clockDivider = 0xFF,  // Use clock divider (0)
 };
diff --git a/shared/kboot.h b/shared/kboot.h
index d5721e3..5a68090 100644
--- a/shared/kboot.h
+++ b/shared/kboot.h
@@ -8,6 +8,8 @@
 
 // Macros:
 
+    #define BOOTLOADER_TAG 0x6766636B
+
     // bits for bootloader_config_t.enabledPeripherals
     #define ENABLE_PERIPHERAL_UART     (1<<0)
     #define ENABLE_PERIPHERAL_I2C      (1<<1)