diff --git a/product/ERP5Type/tests/custom_zodb.py b/product/ERP5Type/tests/custom_zodb.py
new file mode 100755
index 0000000000000000000000000000000000000000..c80bcac617ae0e8129e14bd742f777db7a0df563
--- /dev/null
+++ b/product/ERP5Type/tests/custom_zodb.py
@@ -0,0 +1,4 @@
+import ZODB
+from ZODB.DemoStorage import DemoStorage
+
+Storage = DemoStorage(quota=(1<<20))