diff --git a/Classes/PHPExcel/Reader/HTML.php b/Classes/PHPExcel/Reader/HTML.php
index 3a59bb1..6adcc85 100644
--- a/Classes/PHPExcel/Reader/HTML.php
+++ b/Classes/PHPExcel/Reader/HTML.php
@@ -424,7 +424,7 @@ class PHPExcel_Reader_HTML extends PHPExcel_Reader_Abstract implements PHPExcel_
 		//	Create a new DOM object
 		$dom = new DOMDocument;
 		//	Reload the HTML file into the DOM object
-        if (version_compare(PHP_VERSION, '5.4.0') >= 0) {
+        if ((version_compare(PHP_VERSION, '5.4.0') >= 0) && defined(LIBXML_DTDLOAD)) {
             $loaded = $dom->loadHTMLFile($pFilename, PHPExcel_Settings::getLibXmlLoaderOptions());
         } else {
             $loaded = $dom->loadHTMLFile($pFilename);
diff --git a/Classes/PHPExcel/Settings.php b/Classes/PHPExcel/Settings.php
index d9d197a..c78d935 100644
--- a/Classes/PHPExcel/Settings.php
+++ b/Classes/PHPExcel/Settings.php
@@ -363,10 +363,12 @@ class PHPExcel_Settings
      */
     public static function setLibXmlLoaderOptions($options = null)
     {
-        if (is_null($options)) {
+        if (is_null($options) && defined(LIBXML_DTDLOAD)) {
             $options = LIBXML_DTDLOAD | LIBXML_DTDATTR;
         }
-        @libxml_disable_entity_loader($options == (LIBXML_DTDLOAD | LIBXML_DTDATTR)); 
+        if (version_compare(PHP_VERSION, '5.2.11') >= 0) {
+            @libxml_disable_entity_loader($options == (LIBXML_DTDLOAD | LIBXML_DTDATTR)); 
+        }
         self::$_libXmlLoaderOptions = $options;
     } // function setLibXmlLoaderOptions
 
@@ -378,10 +380,12 @@ class PHPExcel_Settings
      */
     public static function getLibXmlLoaderOptions()
     {
-        if (is_null(self::$_libXmlLoaderOptions)) {
+        if (is_null(self::$_libXmlLoaderOptions) && defined(LIBXML_DTDLOAD)) {
             self::setLibXmlLoaderOptions(LIBXML_DTDLOAD | LIBXML_DTDATTR);
         }
-        @libxml_disable_entity_loader(self::$_libXmlLoaderOptions == (LIBXML_DTDLOAD | LIBXML_DTDATTR));
+        if (version_compare(PHP_VERSION, '5.2.11') >= 0) {
+            @libxml_disable_entity_loader(self::$_libXmlLoaderOptions == (LIBXML_DTDLOAD | LIBXML_DTDATTR));
+        }
         return self::$_libXmlLoaderOptions;
     } // function getLibXmlLoaderOptions
 }
diff --git a/changelog.txt b/changelog.txt
index 8e4a5f6..1279454 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -29,7 +29,7 @@ Planned for v1.8.1
 - Bugfix:   (MBaker)                            - Fix to ensure that current cell is maintained when executing formula calculations
 - Bugfix:   (MBaker)          Work Item GH-350  - Keep/set the value on Reader _loadSheetsOnly as NULL, courtesy of Restless-ET 
 - Bugfix:   (MBaker)          Work Item CP18105 - Loading an Excel 2007 spreadsheet throws an "Autofilter must be set on a range of cells" exception
-- Bugfix:   (MBaker)                            - Fix to autoloader registration for backward compatibility with PHP 5.2.0 not accepting the prepend flag
+- Bugfix:   (MBaker)          Work Item GH-388  - Fix to autoloader registration for backward compatibility with PHP 5.2.0 not accepting the prepend flag
 - Bugfix:   (MBaker)          Work Item GH-384  - DOM loadHTMLFile() failing with options flags when using PHP < 5.4.0
 - Bugfix:   (MBaker)                            - Fix for percentage operator in formulae for BIFF Writer
 - General:  (MBaker)                            - Small performance improvement for autosize columns