diff --git a/gestion/config/trigger.py b/gestion/config/trigger.py
index 816a7d86..a7f4b87c 100644
--- a/gestion/config/trigger.py
+++ b/gestion/config/trigger.py
@@ -7,7 +7,7 @@
 import itertools
 import os
 
-debug = (int(os.environ['DBG_TRIGGER']) == 1) or True
+debug = (int(os.environ.get('DBG_TRIGGER', 0)) == 1) or True
 log_level = "info"
 
 # Serveur maître