diff --git a/keyboards/helix/config.h b/keyboards/helix/config.h
index a6f54d7afa3..875312f0c35 100644
--- a/keyboards/helix/config.h
+++ b/keyboards/helix/config.h
@@ -26,8 +26,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //   -include keyboards/helix/rev?/keymaps/MAPNAME/config.h
 //   XXXX.c
 
-#include <serial_config.h>
-
 // GCC include search path in qmk_firmare/keyboards/helix/
 //    #include "..." search starts here:
 //    #include <...> search starts here:
diff --git a/keyboards/helix/pico/config.h b/keyboards/helix/pico/config.h
index cbeef6e8696..260560f556f 100644
--- a/keyboards/helix/pico/config.h
+++ b/keyboards/helix/pico/config.h
@@ -34,6 +34,11 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define USE_SERIAL
 //#define USE_MATRIX_I2C
 
+/* Soft Serial defines */
+#define SOFT_SERIAL_PIN D2
+#define SERIAL_SLAVE_BUFFER_LENGTH  ((MATRIX_ROWS)/2)
+#define SERIAL_MASTER_BUFFER_LENGTH ((MATRIX_ROWS)/2)
+
 /* Select hand configuration */
 #define MASTER_LEFT
 // #define MASTER_RIGHT
diff --git a/keyboards/helix/pico/serial_config.h b/keyboards/helix/pico/serial_config.h
deleted file mode 100644
index fc8736d4729..00000000000
--- a/keyboards/helix/pico/serial_config.h
+++ /dev/null
@@ -1,9 +0,0 @@
-//// #error rev2 serial config
-
-#ifndef SOFT_SERIAL_PIN
-/* Soft Serial defines */
-#define SOFT_SERIAL_PIN D2
-
-#define SERIAL_SLAVE_BUFFER_LENGTH MATRIX_ROWS/2
-#define SERIAL_MASTER_BUFFER_LENGTH MATRIX_ROWS/2
-#endif
diff --git a/keyboards/helix/rev1/config.h b/keyboards/helix/rev1/config.h
index bb72a15d817..244c12b5dd5 100644
--- a/keyboards/helix/rev1/config.h
+++ b/keyboards/helix/rev1/config.h
@@ -26,6 +26,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define PRODUCT         Helix Alpha
 #define DESCRIPTION     A split keyboard for the cheap makers
 
+#include <serial_config.h>
+
 #define HELIX_ROWS 5
 
 /* key matrix size */
diff --git a/keyboards/helix/rev2/config.h b/keyboards/helix/rev2/config.h
index 4514a37564b..943a02bf8ba 100644
--- a/keyboards/helix/rev2/config.h
+++ b/keyboards/helix/rev2/config.h
@@ -34,6 +34,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define USE_SERIAL
 //#define USE_MATRIX_I2C
 
+/* Soft Serial defines */
+#define SOFT_SERIAL_PIN D2
+#define SERIAL_USE_MULTI_TRANSACTION
+
 /* Select hand configuration */
 #define MASTER_LEFT
 // #define MASTER_RIGHT
diff --git a/keyboards/helix/rev2/serial_config.h b/keyboards/helix/rev2/serial_config.h
deleted file mode 100644
index 37135213d55..00000000000
--- a/keyboards/helix/rev2/serial_config.h
+++ /dev/null
@@ -1,8 +0,0 @@
-//// #error rev2 serial config
-
-#ifndef SOFT_SERIAL_PIN
-/* Soft Serial defines */
-#define SOFT_SERIAL_PIN D2
-
-#define SERIAL_USE_MULTI_TRANSACTION
-#endif