diff --git a/source/administrator/components/com_jedchecker/controllers/uploads.php b/source/administrator/components/com_jedchecker/controllers/uploads.php
index 37de445..d75c68b 100644
--- a/source/administrator/components/com_jedchecker/controllers/uploads.php
+++ b/source/administrator/components/com_jedchecker/controllers/uploads.php
@@ -113,7 +113,7 @@ class jedcheckerControllerUploads extends JControllerlegacy
 
         foreach ($iterator as $file) {
             if ($file->isFile()) {
-                $extension = $file->getExtension();
+                $extension = pathinfo($file->getFilename(), PATHINFO_EXTENSION);;
                 if ($extension == 'zip') {
                     $unzip = $file->getPath() . '/' . $file->getBasename('.' . $extension);
                     $result = JArchive::extract($file->getPathname(), $unzip);
diff --git a/source/administrator/components/com_jedchecker/script.php b/source/administrator/components/com_jedchecker/script.php
index d9c0f69..68833ec 100644
--- a/source/administrator/components/com_jedchecker/script.php
+++ b/source/administrator/components/com_jedchecker/script.php
@@ -16,7 +16,7 @@ class com_jedcheckerInstallerScript
 
     function preflight( $type, $parent ) {
         $this->parent = $parent;
-        if (version_compare(PHP_VERSION, '5.3.6', '<')) {
+        if (version_compare(PHP_VERSION, '5.3.1', '<')) {
             $this->loadLanguage();
             Jerror::raiseWarning(null, JText::sprintf('COM_JEDCHECKER_PHP_VERSION_INCOMPATIBLE', PHP_VERSION, '5.3.6'));
             return false;