diff --git a/lib/timeline/component/DataAxis.js b/lib/timeline/component/DataAxis.js
index 0f3ec598..61055666 100644
--- a/lib/timeline/component/DataAxis.js
+++ b/lib/timeline/component/DataAxis.js
@@ -29,12 +29,12 @@ function DataAxis (body, options, svg, linegraphOptions) {
     alignZeros: true,
     left:{
       range: {min:undefined,max:undefined},
-      format: function (value) {return ''+Number.parseFloat(value.toPrecision(3));},
+      format: function (value) {return ''+parseFloat(value.toPrecision(3));},
       title: {text:undefined,style:undefined}
     },
     right:{
       range: {min:undefined,max:undefined},
-      format: function (value) {return ''+Number.parseFloat(value.toPrecision(3));},
+      format: function (value) {return ''+parseFloat(value.toPrecision(3));},
       title: {text:undefined,style:undefined}
     }
   };