diff --git a/product/ERP5/mixin/divergence_tester.py b/product/ERP5/mixin/divergence_tester.py
index cf25ed4f68cd6fca48088dfb5f48f6e9578d400e..67fe5a4a9fd9de9f6dd75cf92a1abb65db99c9dc 100644
--- a/product/ERP5/mixin/divergence_tester.py
+++ b/product/ERP5/mixin/divergence_tester.py
@@ -100,7 +100,9 @@ class DivergenceTesterMixin:
     If decision_movement is a simulation movement, use
     the recorded properties instead of the native ones.
     """
-    return '%s/%s' % (self.getPortalType(), self.getTestedProperty())
+    tested_property = self.getTestedProperty()
+    return '%s/%s/%r' % (self.getPortalType(), tested_property,
+                         movement.getProperty(tested_property))
 
   def compare(self, prevision_movement, decision_movement):
     """