diff --git a/src/SOL005/NSPerformanceManagement/definitions/SOL005NSPerformanceManagement_def.yaml b/src/SOL005/NSPerformanceManagement/definitions/SOL005NSPerformanceManagement_def.yaml
index 6035136d145be10244b7a7fedb5a80c48ba0866b..454b206ba6317e3b00c7d1b17905a421fa2802b8 100644
--- a/src/SOL005/NSPerformanceManagement/definitions/SOL005NSPerformanceManagement_def.yaml
+++ b/src/SOL005/NSPerformanceManagement/definitions/SOL005NSPerformanceManagement_def.yaml
@@ -24,7 +24,7 @@ definitions:
         description: >
           Authentication parameters to conFigure the use of
           Authorization when sending notifications corresponding
-          to this subscription, as defined in clause 4.5.3.4.
+          to this subscription, as defined in clause 8.3.4 of ETSI GS NFV-SOL 013.
           This attribute shall only be present if the subscriber
           requires authorization of notifications..
         $ref: "../../definitions/SOL005_def.yaml#/definitions/SubscriptionAuthentication"