diff --git a/arch/arm/boot/dts/overlays/edt-ft5406.dtsi b/arch/arm/boot/dts/overlays/edt-ft5406.dtsi
index 0473ff17f1..e430d07031 100644
--- a/arch/arm/boot/dts/overlays/edt-ft5406.dtsi
+++ b/arch/arm/boot/dts/overlays/edt-ft5406.dtsi
@@ -32,7 +32,7 @@ ft5406: ts@38 {
 				compatible = "edt,edt-ft5406";
 				reg = <0x38>;
 
-				touchscreen-size-x = < 800 >;
+				touchscreen-size-x = < 640 >;
 				touchscreen-size-y = < 480 >;
 			};
 		};