diff --git a/system/database/DB_utility.php b/system/database/DB_utility.php
index cb97ff4..02c9218 100644
--- a/system/database/DB_utility.php
+++ b/system/database/DB_utility.php
@@ -343,7 +343,7 @@
 		if ($prefs['format'] === 'zip')
 		{
 			// Set the filename if not provided (only needed with Zip files)
-			if ($prefs['filename'] == '')
+			if ($prefs['filename'] === '')
 			{
 				$prefs['filename'] = (count($prefs['tables']) === 1 ? $prefs['tables'] : $this->db->database)
 							.date('Y-m-d_H-i', time()).'.sql';
@@ -369,7 +369,7 @@
 			$CI->zip->add_data($prefs['filename'], $this->_backup($prefs));
 			return $CI->zip->get_zip();
 		}
-		elseif ($prefs['format'] == 'txt') // Was a text file requested?
+		elseif ($prefs['format'] === 'txt') // Was a text file requested?
 		{
 			return $this->_backup($prefs);
 		}