diff --git a/src/mainboard/google/stout/acpi/superio.asl b/src/mainboard/google/stout/acpi/superio.asl
index 967da18..32ed70a 100644
--- a/src/mainboard/google/stout/acpi/superio.asl
+++ b/src/mainboard/google/stout/acpi/superio.asl
@@ -4,7 +4,30 @@
 #include "../ec.h"
 
 #define SIO_EC_ENABLE_PS2K       // Enable PS/2 Keyboard
-#define SIO_ENABLE_PS2M          // Enable PS/2 Mouse
+
+/* SIO_EC_ENABLE_PS2M is not defined in favor of custom ASL below */
 
 /* ACPI code for EC SuperIO functions */
 #include <ec/quanta/it8518/acpi/superio.asl>
+
+/* Use multitouch trackpad */
+Scope (\_SB.PCI0.LPCB.SIO)
+{
+	Device (PS2M)
+	{
+		Name (_HID, EISAID("LEN2011"))
+		Name (_CID, EISAID("PNP0F13"))
+
+		Method (_STA, 0, NotSerialized)
+		{
+			Return (0x0F)
+		}
+
+		Name (_CRS, ResourceTemplate()
+		{
+			FixedIO (0x60, 0x01)
+			FixedIO (0x64, 0x01)
+			IRQNoFlags () {12}
+		})
+	}
+}