diff --git a/crates/sui-core/src/authority/authority_per_epoch_store.rs b/crates/sui-core/src/authority/authority_per_epoch_store.rs
index 6455f0696f4924..b26748a786d75a 100644
--- a/crates/sui-core/src/authority/authority_per_epoch_store.rs
+++ b/crates/sui-core/src/authority/authority_per_epoch_store.rs
@@ -925,9 +925,12 @@ impl AuthorityPerEpochStore {
     }
 
     pub fn state_accumulator_v2_enabled(&self) -> bool {
-        self.epoch_start_configuration
-            .flags()
-            .contains(&EpochFlag::StateAccumulatorV2Enabled)
+        let flag = match self.get_chain_identifier().chain() {
+            Chain::Unknown | Chain::Testnet => EpochFlag::StateAccumulatorV2EnabledTestnet,
+            Chain::Mainnet => EpochFlag::StateAccumulatorV2EnabledMainnet,
+        };
+
+        self.epoch_start_configuration.flags().contains(&flag)
     }
 
     pub fn executed_in_epoch_table_enabled(&self) -> bool {
diff --git a/crates/sui-core/src/authority/epoch_start_configuration.rs b/crates/sui-core/src/authority/epoch_start_configuration.rs
index 19fa7ec2035cec..ba93d31ba312dc 100644
--- a/crates/sui-core/src/authority/epoch_start_configuration.rs
+++ b/crates/sui-core/src/authority/epoch_start_configuration.rs
@@ -57,7 +57,8 @@ pub enum EpochFlag {
     _StateAccumulatorV2EnabledDeprecated,
 
     ExecutedInEpochTable,
-    StateAccumulatorV2Enabled,
+    StateAccumulatorV2EnabledTestnet,
+    StateAccumulatorV2EnabledMainnet,
 }
 
 impl EpochFlag {
@@ -84,7 +85,9 @@ impl EpochFlag {
         }
 
         if enable_state_accumulator_v2 {
-            new_flags.push(EpochFlag::StateAccumulatorV2Enabled);
+            new_flags.push(EpochFlag::StateAccumulatorV2EnabledTestnet);
+            // TODO: enable on mainnet
+            // new_flags.push(EpochFlag::StateAccumulatorV2EnabledMainnet);
         }
 
         new_flags
@@ -109,7 +112,7 @@ impl fmt::Display for EpochFlag {
                 write!(f, "StateAccumulatorV2EnabledDeprecated (DEPRECATED)")
             }
             EpochFlag::ExecutedInEpochTable => write!(f, "ExecutedInEpochTable"),
-            EpochFlag::StateAccumulatorV2Enabled => write!(f, "StateAccumulatorV2Enabled"),
+            EpochFlag::StateAccumulatorV2EnabledTestnet => write!(f, "StateAccumulatorV2Enabled"),
         }
     }
 }
diff --git a/crates/sui-core/src/state_accumulator.rs b/crates/sui-core/src/state_accumulator.rs
index 8ec3b5f184b6d6..ae594e4be3270c 100644
--- a/crates/sui-core/src/state_accumulator.rs
+++ b/crates/sui-core/src/state_accumulator.rs
@@ -389,9 +389,7 @@ impl StateAccumulator {
         epoch_store: &Arc<AuthorityPerEpochStore>,
         metrics: Arc<StateAccumulatorMetrics>,
     ) -> Self {
-        if epoch_store.state_accumulator_v2_enabled()
-            && epoch_store.get_chain_identifier().chain() != Chain::Mainnet
-        {
+        if epoch_store.state_accumulator_v2_enabled() {
             StateAccumulator::V2(StateAccumulatorV2::new(store, metrics))
         } else {
             StateAccumulator::V1(StateAccumulatorV1::new(store, metrics))