diff --git a/src/service/poc_mobile.proto b/src/service/poc_mobile.proto
index d1c33895..443664a5 100644
--- a/src/service/poc_mobile.proto
+++ b/src/service/poc_mobile.proto
@@ -337,14 +337,10 @@ message subscriber_reward {
   uint64 discovery_location_amount = 2;
 }
 
-enum service_provider {
-  service_provider_helium_mobile = 0;
-}
-
 message service_provider_reward {
   // rewardable entity id of the service provider to which the reward will be
   // credited
-  service_provider service_provider_id = 1;
+  string service_provider_id = 1;
   /// Amount in bones rewarded
   uint64 amount = 2;
 }