diff --git a/sys/arm64/conf/NOTES b/sys/arm64/conf/NOTES
--- a/sys/arm64/conf/NOTES
+++ b/sys/arm64/conf/NOTES
@@ -182,9 +182,6 @@
 
 # Pseudo devices.
 options 	EFIRT		# EFI Runtime Services
-
-# EXT_RESOURCES pseudo devices
-options 	EXT_RESOURCES
 device		clk
 device		phy
 device		hwreset
diff --git a/sys/arm64/conf/std.dev b/sys/arm64/conf/std.dev
--- a/sys/arm64/conf/std.dev
+++ b/sys/arm64/conf/std.dev
@@ -59,9 +59,6 @@
 device		md			# Memory "disks"
 device		gif			# IPv6 and IPv4 tunneling
 device		firmware		# firmware assist module
-
-# EXT_RESOURCES pseudo devices
-options 	EXT_RESOURCES
 device		clk
 device		phy
 device		hwreset