diff --git a/enrich-etab.ini b/enrich-etab.ini
index a99295e..be0062a 100644
--- a/enrich-etab.ini
+++ b/enrich-etab.ini
@@ -13,7 +13,7 @@
 # Concaténation des sigles et libellés des établissements associés
 [assign]
 path = ws.etab
-value = get('ws.rnsr', []).map(structs => Array.isArray(structs) ? structs.map(struct => `${struct.sigle}: ${struct.intitule}`) : []).flatten()
+value = get('ws.rnsr', []).map(structs => Array.isArray(structs) ? structs.map(struct => `${struct.sigle}: ${struct.intitule}`) : []).flatten().uniq()
 
 [dump]
 indent = true