diff --git a/src/etc/etc.sparc64/sysctl.conf b/src/etc/etc.sparc64/sysctl.conf
index 8e207407..38cba543 100644
--- a/src/etc/etc.sparc64/sysctl.conf
+++ b/src/etc/etc.sparc64/sysctl.conf
@@ -1 +1,2 @@
 #machdep.led_blink=1		# 1=On sparc64, make led(s) blink
+#machdep.allowaperture=1	# See xf86(4)