diff --git a/src/service/poc_lora.proto b/src/service/poc_lora.proto
index 44426060..384a720e 100644
--- a/src/service/poc_lora.proto
+++ b/src/service/poc_lora.proto
@@ -266,8 +266,6 @@ message iot_reward_share {
     operational_reward operational_reward = 4;
     unallocated_reward unallocated_reward = 5;
   }
-  // the onchain epoch of the reward share
-  uint64 epoch = 6;
 }
 
 message lora_stream_session_offer_v1 { bytes nonce = 1; }