1 files changed, 2 insertions, 1 deletions

diff --git a/keyboards/lets_split/split_util.c b/keyboards/lets_split/split_util.c
index 461921798..226dc1881 100644
--- a/keyboards/lets_split/split_util.c
+++ b/keyboards/lets_split/split_util.c
@@ -21,7 +21,8 @@ static void setup_handedness(void) {
   #ifdef EE_HANDS
     isLeftHand = eeprom_read_byte(EECONFIG_HANDEDNESS);
   #else
-    #ifdef I2C_MASTER_RIGHT
+    // I2C_MASTER_RIGHT is deprecated use MASTER_RIGHT instead since this works for both serial and i2c
+    #if defined(I2C_MASTER_RIGHT) || defined(MASTER_RIGHT)
       isLeftHand = !has_usb();
     #else
       isLeftHand = has_usb();