diff --git a/luci-app-openmptcprouter/luasrc/view/openmptcprouter/wizard.htm b/luci-app-openmptcprouter/luasrc/view/openmptcprouter/wizard.htm
index 0e4e087ef..f2c85d3e9 100644
--- a/luci-app-openmptcprouter/luasrc/view/openmptcprouter/wizard.htm
+++ b/luci-app-openmptcprouter/luasrc/view/openmptcprouter/wizard.htm
@@ -682,7 +682,7 @@
 		<div class="cbi-value" id="cbi-network-<%=ifname%>-ipv6address" data-index="8">
 		    <label class="cbi-value-title"><%:IPv6 address%></label>
 		    <div class="cbi-value-field">
-			<input type="text" id="cbid.network.<%=ifname%>.ip6addr" name="cbid.network.<%=ifname%>.ip6addr" class="cbi-input-text" value="<%=value%>" data-type="ip6addr">
+			<input type="text" id="cbid.network.<%=ifname%>.ip6addr" name="cbid.network.<%=ifname%>.ip6addr" class="cbi-input-text" value="<%=value%>" data-type="ip6addr" data-optional="true">
 			<br />
 			<div class="cbi-value-description">
 			    <%:Set an IP in the same network as the modem%>
@@ -696,7 +696,7 @@
 		<div class="cbi-value" id="cbi-network-<%=ifname%>-ip6gw" data-index="9">
 		    <label class="cbi-value-title"><%:IPv6 gateway%></label>
 		    <div class="cbi-value-field">
-			<input type="text" id="cbid.network.<%=ifname%>.ip6gw" name="cbid.network.<%=ifname%>.ip6gw" class="cbi-input-text" value="<%=uci:get("network",ifname,"ip6gw")%>" data-type="ip6addr">
+			<input type="text" id="cbid.network.<%=ifname%>.ip6gw" name="cbid.network.<%=ifname%>.ip6gw" class="cbi-input-text" value="<%=uci:get("network",ifname,"ip6gw")%>" data-type="ip6addr"  data-optional="true">
 			<br />
 			<div class="cbi-value-description">
 			    <%:Set here IP of the modem%>