diff --git a/users/halcyon_modules/splitkb/halcyon.h b/users/halcyon_modules/splitkb/halcyon.h
index 2f1878c0..23289234 100644
--- a/users/halcyon_modules/splitkb/halcyon.h
+++ b/users/halcyon_modules/splitkb/halcyon.h
@@ -3,6 +3,8 @@
 
 #pragma once
 
+#include QMK_KEYBOARD_H
+
 typedef enum module {
     none,
     hlc_none,