diff --git a/checks/__init__.py b/checks/__init__.py
index 4cdfb0b84b..5f17f32d7f 100644
--- a/checks/__init__.py
+++ b/checks/__init__.py
@@ -293,7 +293,7 @@ def get_metrics(self, expire=True):
 
 
 class AgentCheck(object):
-    OK, WARNING, CRITICAL, UNKNOWN = (0, 1, 2, 3)
+    OK, WARNING, CRITICAL, UNKNOWN, MAINTENANCE = (0, 1, 2, 3, 4)
 
     SOURCE_TYPE_NAME = None