diff --git a/rpc/stream/rpc.go b/rpc/stream/rpc.go
index f3a46da642..5e4d1bb78c 100644
--- a/rpc/stream/rpc.go
+++ b/rpc/stream/rpc.go
@@ -57,9 +57,12 @@ type RPCStream struct {
 	logger    log.Logger
 	txDecoder sdk.TxDecoder
 
-	headerStream    *Stream[RPCHeader]
+	// headerStream/logStream are backed by cometbft event subscription
+	headerStream *Stream[RPCHeader]
+	logStream    *Stream[*ethtypes.Log]
+
+	// pendingTxStream is backed by check-tx ante handler
 	pendingTxStream *Stream[common.Hash]
-	logStream       *Stream[*ethtypes.Log]
 
 	wg               sync.WaitGroup
 	validatorAccount validatorAccountFunc
@@ -76,17 +79,17 @@ func NewRPCStreams(
 		logger:           logger,
 		txDecoder:        txDecoder,
 		validatorAccount: validatorAccount,
+		pendingTxStream:  NewStream[common.Hash](txStreamSegmentSize, txStreamCapacity),
 	}
 }
 
-func (s *RPCStream) init() {
+func (s *RPCStream) initSubscriptions() {
 	if s.headerStream != nil {
 		// already initialized
 		return
 	}
 
 	s.headerStream = NewStream[RPCHeader](headerStreamSegmentSize, headerStreamCapacity)
-	s.pendingTxStream = NewStream[common.Hash](txStreamSegmentSize, txStreamCapacity)
 	s.logStream = NewStream[*ethtypes.Log](logStreamSegmentSize, logStreamCapacity)
 
 	ctx := context.Background()
@@ -121,17 +124,16 @@ func (s *RPCStream) Close() error {
 }
 
 func (s *RPCStream) HeaderStream() *Stream[RPCHeader] {
-	s.init()
+	s.initSubscriptions()
 	return s.headerStream
 }
 
 func (s *RPCStream) PendingTxStream() *Stream[common.Hash] {
-	s.init()
 	return s.pendingTxStream
 }
 
 func (s *RPCStream) LogStream() *Stream[*ethtypes.Log] {
-	s.init()
+	s.initSubscriptions()
 	return s.logStream
 }