diff --git a/system/libraries/Upload.php b/system/libraries/Upload.php
index 4a4a66f..24d4bd4 100644
--- a/system/libraries/Upload.php
+++ b/system/libraries/Upload.php
@@ -725,7 +725,7 @@
 	public function get_extension($filename)
 	{
 		$x = explode('.', $filename);
-		return '.'.end($x);
+		return (count($x) !== 1) ? '.'.end($x) : '';
 	}
 
 	// --------------------------------------------------------------------