diff --git a/dev/install/DatabaseConfigurationHelper.php b/dev/install/DatabaseConfigurationHelper.php
index 7963d94cc..70f7029ea 100644
--- a/dev/install/DatabaseConfigurationHelper.php
+++ b/dev/install/DatabaseConfigurationHelper.php
@@ -30,13 +30,6 @@ interface DatabaseConfigurationHelper {
 	 */
 	public function requireDatabaseConnection($databaseConfig);
 
-	/**
-	 * Ensure that the database version is correct.
-	 * @param array $databaseConfig Associative array of db configuration, e.g. "server", "username" etc
-	 * @return array Result - e.g. array('success' => true, 'error' => 'details of error')
-	 */
-	public function requireDatabaseVersion($databaseConfig);
-
 	/**
 	 * Ensure that the database connection is able to use an existing database,
 	 * or be able to create one if it doesn't exist.