diff --git a/templates/lambdainst/config.html b/templates/lambdainst/config.html
index 5d48c4d..ad411b6 100644
--- a/templates/lambdainst/config.html
+++ b/templates/lambdainst/config.html
@@ -9,7 +9,7 @@
         <fieldset>
             <div class="pure-control-group">
                 <label for="p_os">{% trans 'OS' %}</label>
-                <select name="client_os" id="p_os" class="pure-input-1-2">
+                <select name="platform" id="p_os" class="pure-input-1-2">
                     {% for k, v in config_os %}
                         <option value="{{k}}">{{v}}</option>
                     {% endfor %}