diff --git a/src/Spout/Writer/Style/Border.php b/src/Spout/Writer/Style/Border.php
index b68ec80..75f6a49 100644
--- a/src/Spout/Writer/Style/Border.php
+++ b/src/Spout/Writer/Style/Border.php
@@ -35,6 +35,24 @@ class Border
         $this->setParts($borderParts);
     }
 
+    /**
+     * @param $name The name of the border part
+     * @return null|BorderPart
+     */
+    public function getPart($name)
+    {
+        return $this->hasPart($name) ? $this->parts[$name] : null;
+    }
+
+    /**
+     * @param $name The name of the border part
+     * @return bool
+     */
+    public function hasPart($name)
+    {
+        return isset($this->parts[$name]);
+    }
+
     /**
      * @return array
      */
diff --git a/src/Spout/Writer/XLSX/Helper/StyleHelper.php b/src/Spout/Writer/XLSX/Helper/StyleHelper.php
index 3c2b3d1..5bc2aa5 100644
--- a/src/Spout/Writer/XLSX/Helper/StyleHelper.php
+++ b/src/Spout/Writer/XLSX/Helper/StyleHelper.php
@@ -110,13 +110,21 @@ EOD;
             $border = $style->getBorder();
             if ($border) {
                 $content .= '<border>';
-                foreach ($border->getParts() as $part) {
-                    /** @var $part \Box\Spout\Writer\Style\BorderPart */
-                    $content .= BorderHelper::serializeBorderPart($part);
+
+                $sortOrder = ['left', 'right', 'top', 'bottom'];
+
+                foreach ($sortOrder as $partName) {
+                    if ($border->hasPart($partName)) {
+                        /** @var $part \Box\Spout\Writer\Style\BorderPart */
+                        $part = $border->getPart($partName);
+                        $content .= BorderHelper::serializeBorderPart($part);
+                    }
                 }
+
                 $content .= '</border>';
+
             } else {
-                $content .= '<border><left/><right/><top/><bottom/><diagonal/></border>';
+                $content .= '<border><left/><right/><top/><bottom/></border>';
             }
         }
 
diff --git a/tests/Spout/Writer/XLSX/WriterWithStyleTest.php b/tests/Spout/Writer/XLSX/WriterWithStyleTest.php
index df34a33..7596efa 100644
--- a/tests/Spout/Writer/XLSX/WriterWithStyleTest.php
+++ b/tests/Spout/Writer/XLSX/WriterWithStyleTest.php
@@ -268,6 +268,49 @@ class WriterWithStyleTest extends \PHPUnit_Framework_TestCase
         $this->assertEquals(3, $styleXfsElements->getAttribute('count'), '3 cell xfs present');
     }
 
+    /**
+     * @return void
+     */
+    public function testBordersCorrectOrder()
+    {
+        // Border should be Left, Right, Top, Bottom
+        $fileName = 'test_borders_correct_order.xlsx';
+
+        $dataRows = [
+            ['I am a teapot'],
+        ];
+
+        $borders = (new BorderBuilder())
+            ->setBorderRight()
+            ->setBorderTop()
+            ->setBorderLeft()
+            ->setBorderBottom()
+            ->build();
+
+        $style = (new StyleBuilder())->setBorder($borders)->build();
+        $this->writeToXLSXFile($dataRows, $fileName, $style);
+        $borderElements = $this->getXmlSectionFromStylesXmlFile($fileName, 'borders');
+
+        $correctOrdering = [
+            'left', 'right', 'top', 'bottom'
+        ];
+
+        /** @var  $borderNode  \DOMElement */
+        foreach ($borderElements->childNodes as $borderNode) {
+            $borderParts = $borderNode->childNodes;
+            $ordering = [];
+
+            /** @var $part \DOMText */
+            foreach ($borderParts as $part) {
+                if ($part instanceof \DOMElement) {
+                    $ordering[] = $part->nodeName;
+                }
+            }
+
+            $this->assertEquals($correctOrdering, $ordering, 'The border parts are in correct ordering');
+        };
+    }
+
     /**
      * @param array $allRows
      * @param string $fileName