diff --git a/sdk/program/src/epoch_rewards_partition_data.rs b/sdk/program/src/epoch_rewards_partition_data.rs
index 5cd4d74fd5283c..1ff2a4c0ae8c1b 100644
--- a/sdk/program/src/epoch_rewards_partition_data.rs
+++ b/sdk/program/src/epoch_rewards_partition_data.rs
@@ -12,7 +12,6 @@ pub enum EpochRewardsPartitionDataVersion {
     V0(PartitionData),
 }
 
-#[repr(u8)]
 #[derive(Debug, Serialize, Deserialize, PartialEq, Eq, Clone)]
 pub enum HasherKind {
     Sip13,