diff --git a/luci-app-openmptcprouter/luasrc/view/openmptcprouter/wizard.htm b/luci-app-openmptcprouter/luasrc/view/openmptcprouter/wizard.htm
index 9331a7abd..99dbd5923 100644
--- a/luci-app-openmptcprouter/luasrc/view/openmptcprouter/wizard.htm
+++ b/luci-app-openmptcprouter/luasrc/view/openmptcprouter/wizard.htm
@@ -114,7 +114,7 @@ end
 	    <div class="cbi-value">
 		<label class="cbi-value-title"><%:Enable IPv6%></label>
 		<div class="cbi-value-field">
-		    <input class="cbi-input-checkbox" type="checkbox" name="enableipv6" value="0" <% if uci:get("openmptcprouter","settings","disable_ipv6") == 1 then %>checked<% end %> />
+		    <input class="cbi-input-checkbox" type="checkbox" name="enableipv6" value="0" <% if uci:get("openmptcprouter","settings","disable_ipv6") == "0" then %>checked<% end %> />
 		    <br />
 		    <div class="cbi-value-description">
 		        <%:You should disable IPv6 here if server doesn't provide IPv6.%>