diff --git a/eth/catalyst/api.go b/eth/catalyst/api.go
index e22dc5b179..c44d8d58d1 100644
--- a/eth/catalyst/api.go
+++ b/eth/catalyst/api.go
@@ -494,9 +494,9 @@ func (api *ConsensusAPI) getPayload(payloadID engine.PayloadID, full bool) (*eng
 func (api *ConsensusAPI) GetBlobsV1(hashes []common.Hash) ([]*engine.BlobAndProofV1, error) {
 	// Reject the request if Osaka has been activated.
 	// follow https://github.com/ethereum/execution-apis/blob/main/src/engine/osaka.md#cancun-api
-	header := api.eth.BlockChain().CurrentHeader()
-	if api.config().IsOsaka(header.Number, header.Time) {
-		return nil, unsupportedForkErr("engine_getBlobsV1 is not supported after Osaka fork")
+	head := api.eth.BlockChain().CurrentHeader()
+	if !api.checkFork(head.Time, forks.Cancun, forks.Prague) {
+		return nil, unsupportedForkErr("engine_getBlobsV1 is only available at Cancun/Prague fork")
 	}
 	if len(hashes) > 128 {
 		return nil, engine.TooLargeRequest.With(fmt.Errorf("requested blob count too large: %v", len(hashes)))
@@ -538,9 +538,6 @@ func (api *ConsensusAPI) GetBlobsV1(hashes []common.Hash) ([]*engine.BlobAndProo
 //   - if the request is [A_versioned_hash_for_blob_with_blob_proof], the response
 //     MUST be null as well.
 //
-//     Note, geth internally make the conversion from old version to new one, so the
-//     data will be returned normally.
-//
 // Client software MUST support request sizes of at least 128 blob versioned
 // hashes. The client MUST return -38004: Too large request error if the number
 // of requested blobs is too large.
@@ -548,6 +545,10 @@ func (api *ConsensusAPI) GetBlobsV1(hashes []common.Hash) ([]*engine.BlobAndProo
 // Client software MUST return null if syncing or otherwise unable to serve
 // blob pool data.
 func (api *ConsensusAPI) GetBlobsV2(hashes []common.Hash) ([]*engine.BlobAndProofV2, error) {
+	head := api.eth.BlockChain().CurrentHeader()
+	if !api.checkFork(head.Time, forks.Osaka) {
+		return nil, unsupportedForkErr("engine_getBlobsV2 is only available at Osaka fork")
+	}
 	if len(hashes) > 128 {
 		return nil, engine.TooLargeRequest.With(fmt.Errorf("requested blob count too large: %v", len(hashes)))
 	}