diff --git a/common_features.mk b/common_features.mk
index b9cd084d293..f98a788ca2a 100644
--- a/common_features.mk
+++ b/common_features.mk
@@ -17,6 +17,7 @@ SERIAL_PATH := $(QUANTUM_PATH)/serial_link
 
 QUANTUM_SRC += \
     $(QUANTUM_DIR)/quantum.c \
+    $(QUANTUM_DIR)/bitwise.c \
     $(QUANTUM_DIR)/led.c \
     $(QUANTUM_DIR)/keymap_common.c \
     $(QUANTUM_DIR)/keycode_config.c
@@ -36,6 +37,11 @@ ifeq ($(strip $(API_SYSEX_ENABLE)), yes)
     SRC += $(QUANTUM_DIR)/api.c
 endif
 
+ifeq ($(strip $(COMMAND_ENABLE)), yes)
+    SRC += $(QUANTUM_DIR)/command.c
+    OPT_DEFS += -DCOMMAND_ENABLE
+endif
+
 ifeq ($(strip $(AUDIO_ENABLE)), yes)
     OPT_DEFS += -DAUDIO_ENABLE
     MUSIC_ENABLE = yes
diff --git a/keyboards/ai03/orbit/matrix.h b/keyboards/ai03/orbit/matrix.h
deleted file mode 100644
index 664372b7699..00000000000
--- a/keyboards/ai03/orbit/matrix.h
+++ /dev/null
@@ -1,3 +0,0 @@
-#pragma once
-
-#include "common/matrix.h"
diff --git a/keyboards/ai03/orbit/transport.h b/keyboards/ai03/orbit/transport.h
index 67597652fdb..757eae6f5c4 100644
--- a/keyboards/ai03/orbit/transport.h
+++ b/keyboards/ai03/orbit/transport.h
@@ -1,6 +1,6 @@
 #pragma once
 
-#include "common/matrix.h"
+#include "matrix.h"
 
 #define ROWS_PER_HAND (MATRIX_ROWS/2)
 
diff --git a/tmk_core/common/util.c b/quantum/bitwise.c
similarity index 100%
rename from tmk_core/common/util.c
rename to quantum/bitwise.c
diff --git a/tmk_core/common/util.h b/quantum/bitwise.h
similarity index 88%
rename from tmk_core/common/util.h
rename to quantum/bitwise.h
index db57f268c30..276bc7437b3 100644
--- a/tmk_core/common/util.h
+++ b/quantum/bitwise.h
@@ -19,13 +19,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #include <stdint.h>
 
-// convert to L string
-#define LSTR(s) XLSTR(s)
-#define XLSTR(s) L## #s
-// convert to string
-#define STR(s) XSTR(s)
-#define XSTR(s) #s
-
 #ifdef __cplusplus
 extern "C" {
 #endif
diff --git a/tmk_core/common/command.c b/quantum/command.c
similarity index 100%
rename from tmk_core/common/command.c
rename to quantum/command.c
diff --git a/tmk_core/common/command.h b/quantum/command.h
similarity index 100%
rename from tmk_core/common/command.h
rename to quantum/command.h
diff --git a/tmk_core/common/led.h b/quantum/led.h
similarity index 100%
rename from tmk_core/common/led.h
rename to quantum/led.h
diff --git a/tmk_core/common/matrix.h b/quantum/matrix.h
similarity index 100%
rename from tmk_core/common/matrix.h
rename to quantum/matrix.h
diff --git a/tmk_core/ring_buffer.h b/quantum/ring_buffer.h
similarity index 85%
rename from tmk_core/ring_buffer.h
rename to quantum/ring_buffer.h
index 8f887c8f74a..284745ca8e0 100644
--- a/tmk_core/ring_buffer.h
+++ b/quantum/ring_buffer.h
@@ -1,14 +1,13 @@
 #pragma once
 
-/*--------------------------------------------------------------------
- * Ring buffer to store scan codes from keyboard
- *------------------------------------------------------------------*/
-#ifndef RBUF_SIZE
-#    define RBUF_SIZE 32
-#endif
 #include <util/atomic.h>
 #include <stdint.h>
 #include <stdbool.h>
+
+#ifndef RBUF_SIZE
+#    define RBUF_SIZE 32
+#endif
+
 static uint8_t     rbuf[RBUF_SIZE];
 static uint8_t     rbuf_head = 0;
 static uint8_t     rbuf_tail = 0;
diff --git a/quantum/split_common/transport.h b/quantum/split_common/transport.h
index f3e752bf9bf..c667bfab853 100644
--- a/quantum/split_common/transport.h
+++ b/quantum/split_common/transport.h
@@ -1,6 +1,6 @@
 #pragma once
 
-#include "common/matrix.h"
+#include "matrix.h"
 
 void transport_master_init(void);
 void transport_slave_init(void);
diff --git a/keyboards/converter/adb_usb/led.h b/quantum/util.h
similarity index 60%
rename from keyboards/converter/adb_usb/led.h
rename to quantum/util.h
index b33b6894e51..bef3b9abe36 100644
--- a/keyboards/converter/adb_usb/led.h
+++ b/quantum/util.h
@@ -13,31 +13,14 @@ GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-Ported to QMK by Peter Roe <pete@13bit.me>
 */
+#pragma once
 
-#ifndef LED_H
-#define LED_H
-#include <stdint.h>
+#include "bitwise.h"
 
-
-/* keyboard LEDs */
-#define USB_LED_NUM_LOCK                0
-#define USB_LED_CAPS_LOCK               1
-#define USB_LED_SCROLL_LOCK             2
-#define USB_LED_COMPOSE                 3
-#define USB_LED_KANA                    4
-
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-void led_set(uint8_t usb_led);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
+// convert to L string
+#define LSTR(s) XLSTR(s)
+#define XLSTR(s) L## #s
+// convert to string
+#define STR(s) XSTR(s)
+#define XSTR(s) #s
diff --git a/tmk_core/common.mk b/tmk_core/common.mk
index fdf2aa09727..55af71ed6fa 100644
--- a/tmk_core/common.mk
+++ b/tmk_core/common.mk
@@ -13,7 +13,6 @@ TMK_COMMON_SRC +=	$(COMMON_DIR)/host.c \
 	$(COMMON_DIR)/print.c \
 	$(COMMON_DIR)/debug.c \
 	$(COMMON_DIR)/sendchar_null.c \
-	$(COMMON_DIR)/util.c \
 	$(COMMON_DIR)/eeconfig.c \
 	$(COMMON_DIR)/report.c \
 	$(PLATFORM_COMMON_DIR)/suspend.c \
@@ -93,11 +92,6 @@ else
     TMK_COMMON_DEFS += -DNO_DEBUG
 endif
 
-ifeq ($(strip $(COMMAND_ENABLE)), yes)
-    TMK_COMMON_SRC += $(COMMON_DIR)/command.c
-    TMK_COMMON_DEFS += -DCOMMAND_ENABLE
-endif
-
 ifeq ($(strip $(NKRO_ENABLE)), yes)
     ifeq ($(PROTOCOL), VUSB)
         $(info NKRO is not currently supported on V-USB, and has been disabled.)
diff --git a/tmk_core/protocol/arm_atsam/md_rgb_matrix.c b/tmk_core/protocol/arm_atsam/md_rgb_matrix.c
index 439aaf8b380..0ea7e383955 100644
--- a/tmk_core/protocol/arm_atsam/md_rgb_matrix.c
+++ b/tmk_core/protocol/arm_atsam/md_rgb_matrix.c
@@ -16,7 +16,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "arm_atsam_protocol.h"
-#include "tmk_core/common/led.h"
+#include "led.h"
 #include "rgb_matrix.h"
 #include <string.h>
 #include <math.h>