diff --git a/web/static/graph.html b/web/static/graph.html
index b0a99c8ec..46360e674 100644
--- a/web/static/graph.html
+++ b/web/static/graph.html
@@ -45,6 +45,7 @@
             <input type="button" value="<<" name="dec_end">
             <input type="text" name="end_input" id="end{{id}}" value="{{end}}">
             <input type="button" value=">>" name="inc_end">
+            <input type="hidden" name="end">
 
             <label for="step_input{{id}}">Resolution (s):</label>
             <input type="text" name="step_input" id="step_input{{id}}" value="{{step_input}}" size="4">
diff --git a/web/static/js/graph.js b/web/static/js/graph.js
index 5f5329937..44ce58934 100644
--- a/web/static/js/graph.js
+++ b/web/static/js/graph.js
@@ -243,17 +243,14 @@ Prometheus.Graph.prototype.submitQuery = function() {
   self.queryForm.find("input[name=range]").val(rangeSeconds);
   var resolution = self.queryForm.find("input[name=step_input]").val() || Math.max(Math.floor(rangeSeconds / 250), 1);
   self.queryForm.find("input[name=step]").val(resolution);
+  var endDate = self.getEndDate() / 1000;
+  self.queryForm.find("input[name=end]").val(endDate);
 
-  var data = self.queryForm.serialize();
-  var endDate = self.getEndDate()
-  if (endDate) {
-    data = data + "&end=" + endDate/1000
-  }
   $.ajax({
       method: self.queryForm.attr("method"),
       url: self.queryForm.attr("action"),
       dataType: "json",
-      data: data,
+      data: self.queryForm.serialize(),
       success: function(json, textStatus) {
         if (json.Type == "error") {
           alert(json.Value);