4 files changed, 7 insertions, 10 deletions
diff --git a/keyboards/redox/rev1/base/info.json b/keyboards/redox/rev1/base/info.json
index 34566b32e8..d65f0e2b1b 100644
--- a/keyboards/redox/rev1/base/info.json
+++ b/keyboards/redox/rev1/base/info.json
@@ -2,6 +2,9 @@
     "usb": {
         "device_version": "1.0.0"
     },
+    "split": {
+        "soft_serial_pin": "D0"
+    },
     "processor": "atmega32u4",
     "bootloader": "caterina"
 }
diff --git a/keyboards/redox/rev1/config.h b/keyboards/redox/rev1/config.h
index 3e05d861b8..b768d2f19f 100644
--- a/keyboards/redox/rev1/config.h
+++ b/keyboards/redox/rev1/config.h
@@ -26,9 +26,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* COL2ROW or ROW2COL */
 #define DIODE_DIRECTION COL2ROW
 
-/* serial.c configuration for split keyboard */
-#define SOFT_SERIAL_PIN D0
-
 /* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
 #define LOCKING_SUPPORT_ENABLE
 /* Locking resynchronize hack */
diff --git a/keyboards/redox/rev1/proton_c/config.h b/keyboards/redox/rev1/proton_c/config.h
index 1706236ca4..71d3470569 100644
--- a/keyboards/redox/rev1/proton_c/config.h
+++ b/keyboards/redox/rev1/proton_c/config.h
@@ -14,15 +14,9 @@
 
 /* serial.c configuration for split keyboard */
 #define SERIAL_USART_FULL_DUPLEX   // Enable full duplex operation mode.
-/* 
-   Because the rev1 config defines SOFT_SERIAL_PIN, we need to undef it, redefine it, and also assign 
-   it to avoid a redefine error.
- */
-#undef SOFT_SERIAL_PIN
-#define SOFT_SERIAL_PIN B6     // USART TX pin
 
 #define SERIAL_USART_RX_PIN B7     // USART RX pin
-#define SERIAL_USART_TX_PIN SOFT_SERIAL_PIN     // USART TX pin
+#define SERIAL_USART_TX_PIN B6     // USART TX pin
 
 #define SERIAL_USART_PIN_SWAP    // Swap TX and RX pins if keyboard is master halve.
                                    // Check if this feature is necessary with your keyboard design and available on the mcu.
diff --git a/keyboards/redox/rev1/proton_c/info.json b/keyboards/redox/rev1/proton_c/info.json
index 4f6bae6891..fd61a7992b 100644
--- a/keyboards/redox/rev1/proton_c/info.json
+++ b/keyboards/redox/rev1/proton_c/info.json
@@ -2,6 +2,9 @@
     "usb": {
         "device_version": "1.0.1"
     },
+    "split": {
+        "soft_serial_pin": "B6"
+    },
     "processor": "STM32F303",
     "bootloader": "stm32-dfu",
     "board": "QMK_PROTON_C"