diff --git a/boards/shields/numpad3d/numpad3d-layouts.dtsi b/boards/shields/numpad3d/numpad3d-layouts.dtsi
index 3096513..a780b8f 100644
--- a/boards/shields/numpad3d/numpad3d-layouts.dtsi
+++ b/boards/shields/numpad3d/numpad3d-layouts.dtsi
@@ -7,6 +7,7 @@
     default_layout: default_layout {
         compatible = "zmk,physical-layout";
         display-name = "Numpad3D";
+        layout = "matrix";
         transform = <&default_transform>;
         kscan = <&kscan0>;