diff --git a/luci-app-openmptcprouter/luasrc/controller/openmptcprouter.lua b/luci-app-openmptcprouter/luasrc/controller/openmptcprouter.lua
index ef001e798..d4385a587 100644
--- a/luci-app-openmptcprouter/luasrc/controller/openmptcprouter.lua
+++ b/luci-app-openmptcprouter/luasrc/controller/openmptcprouter.lua
@@ -256,26 +256,27 @@ function wizard_add()
 	end
 
 	-- Retrieve all server settings
-	local getconf = 0
 	local serversnb = 0
 	local servers = luci.http.formvaluetable("server")
 	for server, _ in pairs(servers) do
 		local server_ip = luci.http.formvalue("%s.server_ip" % server) or ""
-		local backup = luci.http.formvalue("%s.backup" % server) or "0"
+		local master = luci.http.formvalue("master") or ""
 
 		-- OpenMPTCProuter VPS
 		local openmptcprouter_vps_key = luci.http.formvalue("%s.openmptcprouter_vps_key" % server) or ""
 		ucic:set("openmptcprouter",server,"server")
 		ucic:set("openmptcprouter",server,"username","openmptcprouter")
 		ucic:set("openmptcprouter",server,"password",openmptcprouter_vps_key)
-		if backup == "0" and getconf == 0 then
+		if master == server then
 			ucic:set("openmptcprouter",server,"get_config","1")
-			getconf = getconf + 1
+			ucic:set("openmptcprouter",server,"master","1")
+			ucic:set("openmptcprouter",server,"backup","0")
 		else
 			ucic:set("openmptcprouter",server,"get_config","0")
+			ucic:set("openmptcprouter",server,"master","0")
+			ucic:set("openmptcprouter",server,"backup","1")
 		end
 		ucic:set("openmptcprouter",server,"ip",server_ip)
-		ucic:set("openmptcprouter",server,"backup",backup)
 		ucic:set("openmptcprouter",server,"port","65500")
 		ucic:save("openmptcprouter")
 		if server_ip ~= "" then
@@ -290,13 +291,13 @@ function wizard_add()
 	local ss_ip
 
 	for server, _ in pairs(servers) do
-		local backup = luci.http.formvalue("%s.backup" % server) or "0"
+		local master = luci.http.formvalue("master") or ""
 		local server_ip = luci.http.formvalue("%s.server_ip" % server) or ""
 		-- We have an IP, so set it everywhere
 		if server_ip ~= "" then
 			-- Check if we have more than one IP, in this case use Nginx HA
 			if serversnb > 1 then
-				if backup == "0" then
+				if master == server then
 					ss_ip=server_ip
 					table.insert(ss_servers_nginx,server_ip .. ":65101 max_fails=2 fail_timeout=20s")
 					table.insert(ss_servers_ha,server_ip .. ":65101 check")
diff --git a/luci-app-openmptcprouter/luasrc/view/openmptcprouter/wizard.htm b/luci-app-openmptcprouter/luasrc/view/openmptcprouter/wizard.htm
index f798f62e8..9331a7abd 100644
--- a/luci-app-openmptcprouter/luasrc/view/openmptcprouter/wizard.htm
+++ b/luci-app-openmptcprouter/luasrc/view/openmptcprouter/wizard.htm
@@ -88,9 +88,13 @@ end
 		%>
 		<br />
 		<div class="cbi-value">
-		    <label class="cbi-value-title"><%:Set server as backup%></label>
+		    <label class="cbi-value-title"><%:Set server as master%></label>
 		    <div class="cbi-value-field">
-			<input class="cbi-input-checkbox" type="checkbox" name="<%=servername%>.backup" value="1" <% if uci:get("openmptcprouter",servername,"backup") == "1" or uci:get("openmptcprouter",servername,"backup") == "" then %>checked<% end %>/>
+			<input class="cbi-input-radio" type="radio" name="master" value="<%=servername%>" <% if uci:get("openmptcprouter",servername,"master") == "1" then %>checked<% end %>/>
+			<br />
+			<div class="cbi-value-description">
+			    <%:Only one server can be master, else all servers are set as backup.%>
+			</div>
 		    </div>
 		</div>
 	    <%
diff --git a/luci-app-openmptcprouter/root/etc/uci-defaults/openmptcprouter b/luci-app-openmptcprouter/root/etc/uci-defaults/openmptcprouter
index f6eb04ef6..39e50d511 100755
--- a/luci-app-openmptcprouter/root/etc/uci-defaults/openmptcprouter
+++ b/luci-app-openmptcprouter/root/etc/uci-defaults/openmptcprouter
@@ -33,6 +33,13 @@ if [ "$(uci -q get openmptcprouter.vps)" != "server" ]; then
 		commit openmptcprouter
 	EOF
 fi
+if [ "$(uci -q get openmptcprouter.vps.master)" = "" ]; then
+	uci -q batch <<-EOF
+		set openmptcprouter.vps.master=1
+		set openmptcprouter.vps.backup=0
+		commit openmptcprouter
+	EOF
+fi
 if [ "$(uci -q get openmptcprouter.omr)" != "router" ]; then
 	uci -q batch <<-EOF
 		set openmptcprouter.omr=router