diff --git a/Source/MantisSourcePlugin.class.php b/Source/MantisSourcePlugin.class.php
index c8825e1..f16921a 100644
--- a/Source/MantisSourcePlugin.class.php
+++ b/Source/MantisSourcePlugin.class.php
@@ -32,6 +32,7 @@
 			'EVENT_SOURCE_UPDATE_REPO_FORM'	=> 'update_repo_form',
 			'EVENT_SOURCE_UPDATE_REPO'		=> 'update_repo',
 
+			'EVENT_SOURCE_PRECOMMIT'		=> 'precommit',
 			'EVENT_SOURCE_COMMIT'			=> 'commit',
 
 			'EVENT_SOURCE_IMPORT_REPO'		=> 'import_repo',
@@ -54,6 +55,10 @@
 		return $p_repo;
 	}
 
+	function precommit( $p_event ) {
+		return null;
+	}
+
 	abstract function commit( $p_event, $p_repo, $p_data );
 
 	function import_repo( $p_event, $p_repo ) {