diff --git a/runbot/models/build_config.py b/runbot/models/build_config.py
index 04a48fa9..a55ee02d 100644
--- a/runbot/models/build_config.py
+++ b/runbot/models/build_config.py
@@ -38,6 +38,7 @@ class ReProxy():
         return re.findall(*args, **kwrags)
 
     VERBOSE = re.VERBOSE
+    MULTILINE = re.MULTILINE
 
 class Config(models.Model):
     _name = 'runbot.build.config'