diff --git a/lib/SimpleSAML/Database.php b/lib/SimpleSAML/Database.php
index 0ef90b7923513b498a3a1c6dcb3fec4af76bd0ca..aee9e27258955ef902988863b20f9918e3fb60ee 100644
--- a/lib/SimpleSAML/Database.php
+++ b/lib/SimpleSAML/Database.php
@@ -271,7 +271,7 @@ class Database
      * @param string $stmt Prepared SQL statement
      * @param array  $params Parameters
      *
-     * @return \PDOStatement object
+     * @return \PDOStatement|bool object
      */
     public function read($stmt, $params = array())
     {