diff --git a/src/PhpSpreadsheet/Writer/Excel2007/Chart.php b/src/PhpSpreadsheet/Writer/Excel2007/Chart.php
index 6a87446e..b0d71c1f 100644
--- a/src/PhpSpreadsheet/Writer/Excel2007/Chart.php
+++ b/src/PhpSpreadsheet/Writer/Excel2007/Chart.php
@@ -126,7 +126,7 @@ class Chart extends WriterPart
      *
      * @throws  \PHPExcel\Writer\Exception
      */
-    private function writeTitle(Title $title=null, $objWriter)
+    private function writeTitle(Title $title = null, $objWriter)
     {
         if (is_null($title)) {
             return;
@@ -171,7 +171,7 @@ class Chart extends WriterPart
      *
      * @throws  \PHPExcel\Writer\Exception
      */
-    private function writeLegend(Legend $legend=null, $objWriter)
+    private function writeLegend(Legend $legend = null, $objWriter)
     {
         if (is_null($legend)) {
             return;
@@ -226,7 +226,7 @@ class Chart extends WriterPart
      *
      * @throws  \PHPExcel\Writer\Exception
      */
-    private function writePlotArea(PlotArea $plotArea, Title $xAxisLabel=null, Title $yAxisLabel=null, $objWriter, \PHPExcel\Worksheet $pSheet, Axis $xAxis=null, Axis $yAxis=null, GridLines $majorGridlines=null, GridLines $minorGridlines=null)
+    private function writePlotArea(PlotArea $plotArea, Title $xAxisLabel = null, Title $yAxisLabel = null, $objWriter, \PHPExcel\Worksheet $pSheet, Axis $xAxis = null, Axis $yAxis = null, GridLines $majorGridlines = null, GridLines $minorGridlines = null)
     {
         if (is_null($plotArea)) {
             return;
@@ -361,7 +361,7 @@ class Chart extends WriterPart
      *
      * @throws  \PHPExcel\Writer\Exception
      */
-    private function writeDataLabels($objWriter, Layout $chartLayout=null)
+    private function writeDataLabels($objWriter, Layout $chartLayout = null)
     {
         $objWriter->startElement('c:dLbls');
 
@@ -1404,7 +1404,7 @@ class Chart extends WriterPart
      *
      * @throws  \PHPExcel\Writer\Exception
      */
-    private function writeLayout(Layout $layout=null, $objWriter)
+    private function writeLayout(Layout $layout = null, $objWriter)
     {
         $objWriter->startElement('c:layout');
 
diff --git a/tests/PhpSpreadsheet/Style/NumberFormatTest.php b/tests/PhpSpreadsheet/Style/NumberFormatTest.php
index af9b16d6..a33e1f65 100644
--- a/tests/PhpSpreadsheet/Style/NumberFormatTest.php
+++ b/tests/PhpSpreadsheet/Style/NumberFormatTest.php
@@ -4,6 +4,7 @@ namespace PhpSpreadsheet\Tests\Style;
 
 use PHPExcel\Shared\StringHelper;
 use PHPExcel\Style\NumberFormat;
+
 class NumberFormatTest extends \PHPUnit_Framework_TestCase
 {