1 files changed, 2 insertions, 0 deletions

diff --git a/tmk_core/common/keyboard.h b/tmk_core/common/keyboard.h
index 98ceca49b..79d949089 100644
--- a/tmk_core/common/keyboard.h
+++ b/tmk_core/common/keyboard.h
@@ -63,6 +63,8 @@ void keyboard_task(void);
 void keyboard_set_leds(uint8_t leds);
 /* it runs whenever code has to behave differently on a slave */
 bool is_keyboard_master(void);
+/* it runs whenever code has to behave differently on left vs right split */
+bool is_keyboard_left(void);
 
 void keyboard_pre_init_kb(void);
 void keyboard_pre_init_user(void);