diff --git a/quantum/split_common/split_util.c b/quantum/split_common/split_util.c
index a35a16685a1..93a4d3419f0 100644
--- a/quantum/split_common/split_util.c
+++ b/quantum/split_common/split_util.c
@@ -56,8 +56,6 @@
 
 static uint8_t connection_errors = 0;
 
-volatile bool isLeftHand = true;
-
 static struct {
     bool master;
     bool left;
@@ -203,8 +201,6 @@ void split_pre_init(void) {
     split_config.master = is_keyboard_master_impl();
     split_config.left   = is_keyboard_left_impl();
 
-    isLeftHand = is_keyboard_left(); // TODO: Remove isLeftHand
-
 #if defined(RGBLIGHT_ENABLE) && defined(RGBLED_SPLIT)
     uint8_t num_rgb_leds_split[2] = RGBLED_SPLIT;
     if (is_keyboard_left()) {
diff --git a/quantum/split_common/split_util.h b/quantum/split_common/split_util.h
index 6f4c4dc6602..4eb8f8dc18a 100644
--- a/quantum/split_common/split_util.h
+++ b/quantum/split_common/split_util.h
@@ -5,8 +5,6 @@
 
 #include "matrix.h"
 
-extern volatile bool isLeftHand;
-
 void split_pre_init(void);
 void split_post_init(void);