diff --git a/src/ec/compal/ene932/acpi/superio.asl b/src/ec/compal/ene932/acpi/superio.asl
index f152bbab57..034f6ded94 100644
--- a/src/ec/compal/ene932/acpi/superio.asl
+++ b/src/ec/compal/ene932/acpi/superio.asl
@@ -18,7 +18,6 @@
 Device (SIO) {
 	Name (_HID, EisaId("PNP0A05"))
 	Name (_UID, 0)
-	Name (_ADR, 0)
 
 // Keyboard or AUX port (a.k.a Mouse)
 #ifdef SIO_EC_ENABLE_PS2K
diff --git a/src/ec/google/wilco/acpi/ucsi.asl b/src/ec/google/wilco/acpi/ucsi.asl
index f69e5924e7..0d2c5a6336 100644
--- a/src/ec/google/wilco/acpi/ucsi.asl
+++ b/src/ec/google/wilco/acpi/ucsi.asl
@@ -19,7 +19,6 @@ Device (UCSI)
 	Name (_CID, EisaId ("PNP0CA0"))
 	Name (_DDN, "Wilco EC UCSI")
 	Name (_UID, One)
-	Name (_ADR, Zero)
 	Name (_STA, 0xf)
 
 	/* Value written to EC control register to start UCSI command */
diff --git a/src/ec/quanta/it8518/acpi/superio.asl b/src/ec/quanta/it8518/acpi/superio.asl
index 4109cb5d55..8b93aa440e 100644
--- a/src/ec/quanta/it8518/acpi/superio.asl
+++ b/src/ec/quanta/it8518/acpi/superio.asl
@@ -19,7 +19,6 @@ Device (SIO)
 {
 	Name (_HID, EisaId("PNP0A05"))
 	Name (_UID, 0)
-	Name (_ADR, 0)
 
 #ifdef SIO_EC_ENABLE_PS2K
 	Device (PS2K)		// Keyboard