diff --git a/tests/codeigniter/database/DB_test.php b/tests/codeigniter/database/DB_test.php
index d5a9369..dc4fae9 100644
--- a/tests/codeigniter/database/DB_test.php
+++ b/tests/codeigniter/database/DB_test.php
@@ -26,6 +26,14 @@
 	{
 		$config = Mock_Database_DB::config(DB_DRIVER);
 		$connection = new Mock_Database_DB($config);
+
+		// E_DEPRECATED notices thrown by mysql_connect(), mysql_pconnect()
+		// on PHP 5.5+ cause the tests to fail
+		if (DB_DRIVER === 'mysql' && version_compare(PHP_VERSION, '5.5', '>='))
+		{
+			error_reporting(E_ALL & ~E_DEPRECATED);
+		}
+
 		$db = Mock_Database_DB::DB($connection->set_dsn(DB_DRIVER), TRUE);
 
 		$this->assertTrue($db instanceof CI_DB);