diff --git a/chapter2/mysite/myapp/static/scripts/trend.js b/chapter2/mysite/myapp/static/scripts/trend.js
index 7146163..71ec766 100755
--- a/chapter2/mysite/myapp/static/scripts/trend.js
+++ b/chapter2/mysite/myapp/static/scripts/trend.js
@@ -339,7 +339,7 @@ $(function(){
           type: 'bar',
           yAxisIndex: 1,
           barGap: '-100%',
-          data: [100, 100, 100, 100,100, 100, 100, 100],
+          data: [100, 100, 100, 100,100, 100, 100, 100,100,100],
           barWidth: 15,
           itemStyle: {
               normal: {