diff --git a/etc/sysctl.conf b/etc/sysctl.conf
index ec06bbdcf3..8855eb8e82 100644
--- a/etc/sysctl.conf
+++ b/etc/sysctl.conf
@@ -17,4 +17,3 @@ net.inet.udp.maxdgram=57344
 kern.rndtest.verbose=0
 net.link.bridge.pfil_onlyip=0
 net.link.tap.user_open=1
-hw.ata.wc=0