diff --git a/src/soc/intel/broadwell/acpi/gpio.asl b/src/soc/intel/broadwell/acpi/gpio.asl
index 4a5ee9f224..bf55c9b512 100644
--- a/src/soc/intel/broadwell/acpi/gpio.asl
+++ b/src/soc/intel/broadwell/acpi/gpio.asl
@@ -69,7 +69,7 @@ Device (GPIO)
 
 	// GWAK: Setup GPIO as ACPI GPE for Wake
 	// Arg0: GPIO Number
-	Method (GWAK, 1, NotSerialized)
+	Method (GWAK, 1, Serialized)
 	{
 		// Local0 = GPIO Base Address
 		Store (And (GPBS, Not(0x1)), Local0)