3 files changed, 2 insertions, 12 deletions
diff --git a/keyboards/ymdk/ymd40/air40/config.h b/keyboards/ymdk/ymd40/air40/config.h
index 78a7ba5c04..db792118da 100644
--- a/keyboards/ymdk/ymd40/air40/config.h
+++ b/keyboards/ymdk/ymd40/air40/config.h
@@ -16,11 +16,6 @@
 
 #pragma once
 
-#include "config_common.h"
-
-/* key matrix size */
-#define MATRIX_ROWS 4
-#define MATRIX_COLS 12
 
 /*
  * Keyboard Matrix Assignments
diff --git a/keyboards/ymdk/ymd40/air40/info.json b/keyboards/ymdk/ymd40/air40/info.json
index 38cc6970ca..3920ff6a29 100644
--- a/keyboards/ymdk/ymd40/air40/info.json
+++ b/keyboards/ymdk/ymd40/air40/info.json
@@ -8,6 +8,8 @@
         "pid": "0x0911",
         "device_version": "0.0.1"
     },
+    "processor": "atmega32u4",
+    "bootloader": "atmel-dfu",
     "layouts": {
         "LAYOUT_ortho_4x12": {
             "layout": [
diff --git a/keyboards/ymdk/ymd40/air40/rules.mk b/keyboards/ymdk/ymd40/air40/rules.mk
index 3325a699df..3adfcf796b 100644
--- a/keyboards/ymdk/ymd40/air40/rules.mk
+++ b/keyboards/ymdk/ymd40/air40/rules.mk
@@ -1,9 +1,3 @@
-# MCU name
-MCU = atmega32u4
-
-# Bootloader selection
-BOOTLOADER = atmel-dfu
-
 # Build Options
 #   change yes to no to disable
 #
@@ -23,4 +17,3 @@ AUDIO_SUPPORTED = no
 KEY_LOCK_ENABLE = no
 
 LAYOUTS = ortho_4x12
-