diff --git a/app/boards/arm/preonic/preonic_rev3.keymap b/app/boards/arm/preonic/preonic_rev3.keymap
index 9f43a74f..4547e7ec 100644
--- a/app/boards/arm/preonic/preonic_rev3.keymap
+++ b/app/boards/arm/preonic/preonic_rev3.keymap
@@ -12,11 +12,12 @@
 #define ADJ     3
 
 / {
+  chosen { zmk,matrix_transform = &grid_transform; }; 
 	keymap {
 		compatible = "zmk,keymap";
 
 		default_layer {
-// -----------------------------------------------------------------------------------------
+//  ----------------------------------------------------------------------------------------
 // |  GRAV |  1   |  2   |  3   |  4   |  5   |   6   |  7    |  8   |  9   |   0   | BSPC  |
 // |  TAB  |  Q   |  W   |  E   |  R   |  T   |   Y   |  U    |  I   |  O   |   P   | DEL   |
 // |  ESC  |  A   |  S   |  D   |  F   |  G   |   H   |  J    |  K   |  L   |   ;   |  '    |