diff --git a/assets/css/main.css b/assets/css/main.css
index 6bd2f3c..68bc531 100644
--- a/assets/css/main.css
+++ b/assets/css/main.css
@@ -184,10 +184,6 @@ h3 {
     margin: 15px auto 0 auto;
 }
 
-#big-graph {
-    height: 500px;
-}
-
 #big-graph-checkboxes > table {
     width: 100%;
 }
diff --git a/assets/js/site.js b/assets/js/site.js
index ebd3288..fe0b528 100644
--- a/assets/js/site.js
+++ b/assets/js/site.js
@@ -265,6 +265,8 @@ $(document).ready(function() {
     socket.on('historyGraph', function(rawData) {
         displayedGraphData = rawData;
 
+        $('#big-graph').css('height', '500px');
+
         historyPlot = $.plot('#big-graph', convertGraphData(rawData), bigChartOptions);
 
         $('#big-graph').bind('plothover', handlePlotHover);