diff --git a/lib/timeline/component/TimeAxis.js b/lib/timeline/component/TimeAxis.js
index 6762a468..45a0f89f 100644
--- a/lib/timeline/component/TimeAxis.js
+++ b/lib/timeline/component/TimeAxis.js
@@ -385,7 +385,7 @@ TimeAxis.prototype._calculateCharSize = function () {
   // determine the char width and height on the major axis
   if (!this.dom.measureCharMajor) {
     this.dom.measureCharMajor = document.createElement('DIV');
-    this.dom.measureCharMajor.className = 'text minor measure';
+    this.dom.measureCharMajor.className = 'text major measure';
     this.dom.measureCharMajor.style.position = 'absolute';
 
     this.dom.measureCharMajor.appendChild(document.createTextNode('0'));