diff --git a/product/ERP5/PropertySheet/FlowCapacity.py b/product/ERP5/PropertySheet/FlowCapacity.py
index 237dba6c7c76257c2cb8f3f86f6259bd17c89694..bde3d818e052f58e580a9c76e2df02923e486e66 100644
--- a/product/ERP5/PropertySheet/FlowCapacity.py
+++ b/product/ERP5/PropertySheet/FlowCapacity.py
@@ -51,12 +51,12 @@ class FlowCapacity:
       'default'     : 0.0,
       'mode'        : 'w' },
     { 'id'          : 'min_delay',
-      'description' : """The quantity of resource.""",
+      'description' : """The minimal delay time of a production process.""",
       'type'        : 'float',
       'default'     : 0.0,
       'mode'        : 'w' },
     { 'id'          : 'max_delay',
-      'description' : """The quantity of resource.""",
+      'description' : """The maximal delay time of a production process.""",
       'type'        : 'float',
       'default'     : 0.0,
       'mode'        : 'w' },