diff --git a/tiramisu/storage/dictionary/value.py b/tiramisu/storage/dictionary/value.py
index 7a29260..91fabc5 100644
--- a/tiramisu/storage/dictionary/value.py
+++ b/tiramisu/storage/dictionary/value.py
@@ -20,7 +20,7 @@ from ..util import Cache
 from ...setting import undefined
 from ...i18n import _
 
-DEBUG = bool(os.environ.get('DEBUG', False))
+DEBUG = bool(os.environ.get('TIRAMISU_DEBUG', False))
 del os
 
 
diff --git a/tiramisu/storage/sqlite3/value.py b/tiramisu/storage/sqlite3/value.py
index 68678a2..126d7c1 100644
--- a/tiramisu/storage/sqlite3/value.py
+++ b/tiramisu/storage/sqlite3/value.py
@@ -23,7 +23,7 @@ from ...setting import undefined, owners
 from ...i18n import _
 
 
-DEBUG = bool(os.environ.get('DEBUG', False))
+DEBUG = bool(os.environ.get('TIRAMISU_DEBUG', False))
 del os