diff --git a/src/PhpSpreadsheet/Chart/Renderer/jpgraph.php b/src/PhpSpreadsheet/Chart/Renderer/JpGraph.php
similarity index 99%
rename from src/PhpSpreadsheet/Chart/Renderer/jpgraph.php
rename to src/PhpSpreadsheet/Chart/Renderer/JpGraph.php
index 4514de35..98e801d4 100644
--- a/src/PhpSpreadsheet/Chart/Renderer/jpgraph.php
+++ b/src/PhpSpreadsheet/Chart/Renderer/JpGraph.php
@@ -29,7 +29,7 @@ require_once(\PHPExcel\Settings::getChartRendererPath().'/jpgraph.php');
  * @license        http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
  * @version        ##VERSION##, ##DATE##
  */
-class jpgraph
+class JpGraph
 {
     private static $width    = 640;