diff --git a/epdb/models.py b/epdb/models.py
index 60597d3c..33cf81e2 100644
--- a/epdb/models.py
+++ b/epdb/models.py
@@ -2574,7 +2574,7 @@ class Node(EnviPathModel, AliasMixin, ScenarioMixin, AdditionalInformationMixin)
                 collected[str(ai.scenario.uuid)]["proposed"] = True
 
             if ai.type == "Confidence":
-                collected[str(ai.scenario.uuid)]["Confidence"] = ai.get().level
+                collected[str(ai.scenario.uuid)]["Confidence"] = ai.get().level.value
 
             if ai.type == "TransformationProductImportance":
                 collected[str(ai.scenario.uuid)]["Transformation product importance"] = (