diff --git a/src/Spout/Reader/XLSX.php b/src/Spout/Reader/XLSX.php
index 5471f85..5865d20 100644
--- a/src/Spout/Reader/XLSX.php
+++ b/src/Spout/Reader/XLSX.php
@@ -19,6 +19,14 @@ use Box\Spout\Reader\Helper\XLSX\WorksheetHelper;
  */
 class XLSX extends AbstractReader
 {
+    const CELL_TYPE_INLINE_STRING = 'inlineStr';
+    const CELL_TYPE_STR = 'str';
+    const CELL_TYPE_SHARED_STRING = 's';
+    const CELL_TYPE_BOOLEAN = 'b';
+    const CELL_TYPE_NUMERIC = 'n';
+    const CELL_TYPE_DATE = 'd';
+    const CELL_TYPE_ERROR = 'e';
+    
     /** @var string Real path of the file to read */
     protected $filePath;
 
@@ -224,7 +232,115 @@ class XLSX extends AbstractReader
     }
 
     /**
-     * Returns the (unescaped) cell value associated to the given XML node.
+     * Returns the cell's string value from a node's nested value node
+     *
+     * @param \DOMNode $node
+     * @return string The value associated with the cell
+     */
+    protected function getVNodeValue($node)
+    {
+        // for cell types having a "v" tag containing the value.
+        // if not, the returned value should be empty string.
+        $vNode = $node->getElementsByTagName('v')->item(0);
+        if ($vNode !== null) {
+            return $vNode->nodeValue;
+        }
+        return "";
+    }
+
+    /**
+     * Returns the cell String value where string is inline.
+     *
+     * @param \DOMNode $node
+     * @param \Box\Spout\Common\Escaper\XLSX $escaper
+     * @return string The value associated with the cell (null when the cell has an error)
+     */
+    protected function formatInlineStringCellValue($node, $escaper)
+    {
+        // inline strings are formatted this way:
+        // <c r="A1" t="inlineStr"><is><t>[INLINE_STRING]</t></is></c>
+        $tNode = $node->getElementsByTagName('t')->item(0);
+        $escapedCellValue = trim($tNode->nodeValue);
+        $cellValue = $escaper->unescape($escapedCellValue);
+        return $cellValue;
+    }
+
+    /**
+     * Returns the cell String value from shared-strings file using nodeValue index.
+     *
+     * @param string $nodeValue
+     * @param \Box\Spout\Common\Escaper\XLSX $escaper
+     * @return string The value associated with the cell (null when the cell has an error)
+     */
+    protected function formatSharedStringCellValue($nodeValue, $escaper)
+    {
+        // shared strings are formatted this way:
+        // <c r="A1" t="s"><v>[SHARED_STRING_INDEX]</v></c>
+        $sharedStringIndex = intval($nodeValue);
+        $escapedCellValue = $this->sharedStringsHelper->getStringAtIndex($sharedStringIndex);
+        $cellValue = $escaper->unescape($escapedCellValue);
+        return $cellValue;
+    }
+
+    /**
+     * Returns the cell String value, where string is stored in value node.
+     *
+     * @param string $nodeValue
+     * @param \Box\Spout\Common\Escaper\XLSX $escaper
+     * @return string The value associated with the cell (null when the cell has an error)
+     */
+    protected function formatStrCellValue($nodeValue, $escaper)
+    {
+        $escapedCellValue = trim($nodeValue);
+        $cellValue = $escaper->unescape($escapedCellValue);
+        return $cellValue;
+    }
+
+    /**
+     * Returns the cell Numeric value from string of nodeValue.
+     *
+     * @param string $nodeValue
+     * @param \Box\Spout\Common\Escaper\XLSX $escaper
+     * @return int|float The value associated with the cell
+     */
+    protected function formatNumericCellValue($nodeValue)
+    {
+        $cellValue = is_int($nodeValue) ? intval($nodeValue) : floatval($nodeValue);
+        return $cellValue;
+    }
+
+    /**
+     * Returns the cell Boolean value from a specific node's Value.
+     *
+     * @param string $nodeValue
+     * @return bool The value associated with the cell
+     */
+    protected function formatBooleanCellValue($nodeValue)
+    {
+        // !! is similar to boolval()
+        $cellValue = !!$nodeValue;
+        return $cellValue;
+    }
+
+    /**
+     * Returns a cell's PHP Date value, associated to the given stored nodeValue.
+     *
+     * @param string $nodeValue
+     * @param \Box\Spout\Common\Escaper\XLSX $escaper
+     * @return DateTime|null The value associated with the cell (null when the cell has an error)
+     */
+    protected function formatDateCellValue($nodeValue)
+    {
+        try { // Mitigate thrown Exception on invalid date-time format (http://php.net/manual/en/datetime.construct.php)
+            $cellValue = new \DateTime($nodeValue);
+            return $cellValue;
+        } catch (\Exception $e) {
+            return null;
+        }
+    }
+
+    /**
+     * Returns the (unescaped) correctly marshalled, cell value associated to the given XML node.
      *
      * @param \DOMNode $node
      * @param \Box\Spout\Common\Escaper\XLSX $escaper
@@ -232,47 +348,30 @@ class XLSX extends AbstractReader
      */
     protected function getCellValue($node, $escaper)
     {
-        $cellValue = '';
-
         // Default cell type is "n"
         $cellType = $node->getAttribute('t') ?: 'n';
-
-        if ($cellType === 'inlineStr') {
-            // inline strings are formatted this way:
-            // <c r="A1" t="inlineStr"><is><t>[INLINE_STRING]</t></is></c>
-            $tNode = $node->getElementsByTagName('t')->item(0);
-            $escapedCellValue = trim($tNode->nodeValue);
-            $cellValue = $escaper->unescape($escapedCellValue);
-        } else {
-            // all other cell types should have a "v" tag containing the value.
-            // if not, the returned value should be empty string.
-            $vNode = $node->getElementsByTagName('v')->item(0);
-
-            if ($vNode !== null) {
-                if ($cellType === 's') {
-                    // shared strings are formatted this way:
-                    // <c r="A1" t="s"><v>[SHARED_STRING_INDEX]</v></c>
-                    $sharedStringIndex = intval($vNode->nodeValue);
-                    $escapedCellValue = $this->sharedStringsHelper->getStringAtIndex($sharedStringIndex);
-                    $cellValue = $escaper->unescape($escapedCellValue);
-                } else if ($cellType === 'b') {
-                    // !! is similar to boolval()
-                    $cellValue = !!$vNode->nodeValue;
-                } else if ($cellType === 'n') {
-                    $nodeValue = $vNode->nodeValue;
-                    $cellValue = is_int($nodeValue) ? intval($nodeValue) : floatval($nodeValue);
-                } else if ($cellType === 'd') {
-                    $cellValue = new \DateTime($vNode->nodeValue);
-                } else if ($cellType === 'e') {
-                    $cellValue = null;
-                } else if ($cellType === 'str') {
-                    $escapedCellValue = trim($vNode->nodeValue);
-                    $cellValue = $escaper->unescape($escapedCellValue);
-                }
-            }
+        $vNodeValue = $this->getVNodeValue($node);
+        if ( ($vNodeValue === "") && ($cellType !== self::CELL_TYPE_INLINE_STRING) ) {
+            return $vNodeValue;
         }
 
-        return $cellValue;
+        switch ($cellType)
+        {
+            case self::CELL_TYPE_INLINE_STRING:
+                return $this->formatInlineStringCellValue($node, $escaper);
+            case self::CELL_TYPE_SHARED_STRING:
+                return $this->formatSharedStringCellValue($vNodeValue, $escaper);
+            case self::CELL_TYPE_STR:
+                return $this->formatStrCellValue($vNodeValue, $escaper);
+            case self::CELL_TYPE_BOOLEAN:
+                return $this->formatBooleanCellValue($vNodeValue);
+            case self::CELL_TYPE_NUMERIC:
+                return $this->formatNumericCellValue($vNodeValue);
+            case self::CELL_TYPE_DATE:
+                return $this->formatDateCellValue($vNodeValue);
+            default:
+                return null;
+        }
     }
 
     /**
diff --git a/tests/Spout/Reader/XLSXTest.php b/tests/Spout/Reader/XLSXTest.php
index 5856887..f1e3d99 100644
--- a/tests/Spout/Reader/XLSXTest.php
+++ b/tests/Spout/Reader/XLSXTest.php
@@ -129,6 +129,8 @@ class XLSXTest extends \PHPUnit_Framework_TestCase
                 \DateTime::createFromFormat('Y-m-d H:i:s', '2015-06-01 00:00:00'),
                 10, 10.43,
                 null,
+                'weird string', // valid 'str' string
+                null, // invalid date
             ],
             ['', '', '', '', '', '', '', '', ''],
         ];
diff --git a/tests/resources/xlsx/sheet_with_all_cell_types.xlsx b/tests/resources/xlsx/sheet_with_all_cell_types.xlsx
index 17b7303..ec109de 100644
Binary files a/tests/resources/xlsx/sheet_with_all_cell_types.xlsx and b/tests/resources/xlsx/sheet_with_all_cell_types.xlsx differ