diff --git a/src/service/poc_mobile.proto b/src/service/poc_mobile.proto
index f82ba4d1..0fddc685 100644
--- a/src/service/poc_mobile.proto
+++ b/src/service/poc_mobile.proto
@@ -338,7 +338,8 @@ message subscriber_reward {
 }
 
 message service_provider_reward {
-  // id of the subscriber to which the reward will be credited
+  // rewardable entity id of the service provider to which the reward will be
+  // credited
   string service_provider_id = 1;
   /// Amount in bones rewarded
   uint64 amount = 2;