diff --git a/demos/chartviewer/charts/axis/datetimeaxis.cpp b/demos/chartviewer/charts/axis/datetimeaxis.cpp
index e6bf99f..d78a78b 100644
--- a/demos/chartviewer/charts/axis/datetimeaxis.cpp
+++ b/demos/chartviewer/charts/axis/datetimeaxis.cpp
@@ -38,14 +38,16 @@ public:
         QValueAxis *valueaxis = new QValueAxis();
         QDateTimeAxis *datetimeaxis = new QDateTimeAxis();
         datetimeaxis->setTickCount(10);
-        datetimeaxis->setFormat("MMM yyyy");
+        datetimeaxis->setFormat("yyyy");
 
         QString name("Series ");
         int nameIndex = 0;
         foreach (DataList list, table) {
             QLineSeries *series = new QLineSeries(chart);
-            foreach (Data data, list)
-                series->append(data.first);
+            foreach (Data data, list){
+                QPointF point = data.first;
+                series->append(1000l*60l*60l*24l*365l*30l+point.x()*1000l*60l*60l*24l*365l,point.y());
+            }
             series->setName(name + QString::number(nameIndex));
             nameIndex++;
             chart->addSeries(series);
diff --git a/src/axis/datetimeaxis/qdatetimeaxis.cpp b/src/axis/datetimeaxis/qdatetimeaxis.cpp
index 118041a..67f8282 100644
--- a/src/axis/datetimeaxis/qdatetimeaxis.cpp
+++ b/src/axis/datetimeaxis/qdatetimeaxis.cpp
@@ -23,6 +23,7 @@
 #include "chartdatetimeaxisx_p.h"
 #include "chartdatetimeaxisy_p.h"
 #include "domain_p.h"
+#include <float.h>
 #include <cmath>
 
 QTCOMMERCIALCHART_BEGIN_NAMESPACE