diff --git a/extensions/policy-referring-connector/src/main/java/org/upm/inesdata/edc/extension/policy/functions/AbstractReferringConnectorValidation.java b/extensions/policy-referring-connector/src/main/java/org/upm/inesdata/edc/extension/policy/functions/AbstractReferringConnectorValidation.java
index 969b08e..de874e5 100644
--- a/extensions/policy-referring-connector/src/main/java/org/upm/inesdata/edc/extension/policy/functions/AbstractReferringConnectorValidation.java
+++ b/extensions/policy-referring-connector/src/main/java/org/upm/inesdata/edc/extension/policy/functions/AbstractReferringConnectorValidation.java
@@ -25,7 +25,7 @@ protected AbstractReferringConnectorValidation(Monitor monitor) {
         this.monitor = Objects.requireNonNull(monitor);
     }
 
-    private static final String REFERRING_CONNECTOR_CLAIM = "referringConnector";
+    private static final String REFERRING_CONNECTOR_CLAIM = "client_id";
 
     /**
      * Evaluation function.