diff --git a/proto/monitoring.proto b/proto/monitoring.proto
index e90c67818f7d2db9c065a18f08195a6a8371af84..ea7f532bbb3aa6a9e9bcb2223f85619c5ae851f8 100644
--- a/proto/monitoring.proto
+++ b/proto/monitoring.proto
@@ -122,7 +122,7 @@ message SubscriptionID {
 
 message SubsResponse {
   SubscriptionID   subs_id  = 1;
-  repeated KpiList kpi_list = 2;
+  KpiList kpi_list = 2;
 }
 
 message SubsList {