diff --git a/product/ERP5Form/Form.py b/product/ERP5Form/Form.py
index 5078dba07c9c696e585a20d1fb92742ec43741f9..26ac370a3a2c32869c529bd316a725a922b77ba5 100644
--- a/product/ERP5Form/Form.py
+++ b/product/ERP5Form/Form.py
@@ -923,3 +923,8 @@ psyco.bind(Field.get_value)
 
 #from Products.CMFCore.ActionsTool import ActionsTool
 #psyco.bind(ActionsTool.listFilteredActionsFor)
+
+# install interactor
+# we need to install interactor after to apply get_value patch.
+from Products.ERP5Type.Interactor import fielf_value_interactor
+fielf_value_interactor.install()