diff --git a/prover/crates/bin/witness_generator/src/node_aggregation.rs b/prover/crates/bin/witness_generator/src/node_aggregation.rs
index 2836d463cd4..4f396fd4b5a 100644
--- a/prover/crates/bin/witness_generator/src/node_aggregation.rs
+++ b/prover/crates/bin/witness_generator/src/node_aggregation.rs
@@ -8,7 +8,7 @@ use zkevm_test_harness::witness::recursive_aggregation::{
     compute_node_vk_commitment, create_node_witness,
 };
 use zksync_config::configs::FriWitnessGeneratorConfig;
-use zksync_object_store::{ObjectStore, ObjectStoreError};
+use zksync_object_store::ObjectStore;
 use zksync_prover_dal::{ConnectionPool, Prover, ProverDal};
 use zksync_prover_fri_types::{
     circuit_definitions::{
@@ -34,7 +34,7 @@ use crate::{
     metrics::WITNESS_GENERATOR_METRICS,
     utils::{
         load_proofs_for_job_ids, save_node_aggregations_artifacts,
-        save_recursive_layer_prover_input_artifacts, AggregationWrapper, AggregationWrapperLegacy,
+        save_recursive_layer_prover_input_artifacts, AggregationWrapper,
     },
 };
 
@@ -449,27 +449,12 @@ async fn get_artifacts(
         circuit_id: metadata.circuit_id,
         depth: metadata.depth,
     };
-    let result = object_store.get(key).await;
-
-    // TODO: remove after transition
-    return match result {
-        Ok(aggregation_wrapper) => aggregation_wrapper,
-        Err(error) => {
-            // probably legacy struct is saved in GCS
-            if let ObjectStoreError::Serialization(serialization_error) = error {
-                let legacy_wrapper: AggregationWrapperLegacy =
-                    object_store.get(key).await.unwrap_or_else(|inner_error| {
-                        panic!(
-                            "node aggregation job artifacts getting error. Key: {:?}, errors: {:?} {:?}",
-                            key, serialization_error, inner_error
-                        )
-                    });
-                AggregationWrapper(legacy_wrapper.0.into_iter().map(|x| (x.0, x.1)).collect())
-            } else {
-                panic!("node aggregation job artifacts missing: {:?}", key)
-            }
-        }
-    };
+    object_store.get(key).await.unwrap_or_else(|error| {
+        panic!(
+            "node aggregation job artifacts getting error. Key: {:?}, error: {:?}",
+            key, error
+        )
+    })
 }
 
 #[tracing::instrument(
diff --git a/prover/crates/bin/witness_generator/src/utils.rs b/prover/crates/bin/witness_generator/src/utils.rs
index 624d8ec1b40..65fe26d63f5 100644
--- a/prover/crates/bin/witness_generator/src/utils.rs
+++ b/prover/crates/bin/witness_generator/src/utils.rs
@@ -97,32 +97,6 @@ impl StoredObject for AggregationWrapper {
     serialize_using_bincode!();
 }
 
-/// TODO: remove after transition
-#[derive(serde::Serialize, serde::Deserialize)]
-pub struct AggregationWrapperLegacy(
-    pub  Vec<(
-        u64,
-        RecursionQueueSimulator<GoldilocksField>,
-        ZkSyncRecursiveLayerCircuit,
-    )>,
-);
-
-impl StoredObject for AggregationWrapperLegacy {
-    const BUCKET: Bucket = Bucket::NodeAggregationWitnessJobsFri;
-    type Key<'a> = AggregationsKey;
-
-    fn encode_key(key: Self::Key<'_>) -> String {
-        let AggregationsKey {
-            block_number,
-            circuit_id,
-            depth,
-        } = key;
-        format!("aggregations_{block_number}_{circuit_id}_{depth}.bin")
-    }
-
-    serialize_using_bincode!();
-}
-
 #[derive(serde::Serialize, serde::Deserialize)]
 pub struct SchedulerPartialInputWrapper(
     pub  SchedulerCircuitInstanceWitness<