diff --git a/openmptcprouter/files/etc/init.d/openmptcprouter-vps b/openmptcprouter/files/etc/init.d/openmptcprouter-vps
index 35de1cb7e..e502d890f 100755
--- a/openmptcprouter/files/etc/init.d/openmptcprouter-vps
+++ b/openmptcprouter/files/etc/init.d/openmptcprouter-vps
@@ -210,7 +210,7 @@ _set_config_from_vps() {
 		uci -q batch <<-EOF >/dev/null
 			set openmptcprouter.settings.disable_ipv6=1
 		EOF
-		sysctl -w net.ipv6.conf.all.disable_ipv6=1
+		sysctl -qw net.ipv6.conf.all.disable_ipv6=1
 	fi
 
 	uci -q batch <<-EOF >/dev/null