diff --git a/app/boards/shields/ergodash/ergodash.dtsi b/app/boards/shields/ergodash/ergodash.dtsi
index b6ef7fc41..1d69b4645 100644
--- a/app/boards/shields/ergodash/ergodash.dtsi
+++ b/app/boards/shields/ergodash/ergodash.dtsi
@@ -12,6 +12,11 @@
         zmk,matrix-transform = &default_transform;
     };
 
+    wired_split {
+        compatible = "zmk,wired-split";
+        device = <&pro_micro_serial>;
+    };
+
     default_transform: keymap_transform_0 {
         compatible = "zmk,matrix-transform";
         columns = <14>;