diff --git a/right/src/slave_drivers/is31fl3731_driver.c b/right/src/slave_drivers/is31fl3731_driver.c
index 4d5abd0..1a54450 100644
--- a/right/src/slave_drivers/is31fl3731_driver.c
+++ b/right/src/slave_drivers/is31fl3731_driver.c
@@ -64,7 +64,7 @@ void LedSlaveDriver_Init(uint8_t ledDriverId) {
     currentLedDriverState->phase = LedDriverPhase_SetFunctionFrame;
     currentLedDriverState->ledIndex = 0;
     LedDriverStates[LedDriverId_Left].setupLedControlRegistersCommand[7] |= 0b00000010; // Enable the LED of the ISO key.
-    memset(LedDriverStates[ledDriverId].sourceLedValues, 0xff, LED_DRIVER_LED_COUNT);
+    memset(LedDriverStates[ledDriverId].sourceLedValues, LED_BRIGHTNESS_LEVEL, LED_DRIVER_LED_COUNT);
     LedDisplay_SetText(3, "ABC");
 }
 
diff --git a/right/src/slave_drivers/is31fl3731_driver.h b/right/src/slave_drivers/is31fl3731_driver.h
index 43396af..0416e26 100644
--- a/right/src/slave_drivers/is31fl3731_driver.h
+++ b/right/src/slave_drivers/is31fl3731_driver.h
@@ -13,6 +13,7 @@
     #define LED_CONTROL_REGISTERS_COMMAND_LENGTH 19
     #define PMW_REGISTER_UPDATE_CHUNK_SIZE 8
     #define PWM_REGISTER_BUFFER_LENGTH (1 + PMW_REGISTER_UPDATE_CHUNK_SIZE)
+    #define LED_BRIGHTNESS_LEVEL 0xff
 
 // Typedefs: