diff --git a/rpc/events.go b/rpc/events.go
index 15f8d06b2e..06f998e151 100644
--- a/rpc/events.go
+++ b/rpc/events.go
@@ -372,6 +372,9 @@ func (h *Handler) sendReorg(w jsonrpc.Conn, reorg *sync.ReorgData, id uint64) er
 	return err
 }
 
+// SubscribeTxnStatus subscribes to status changes of a transaction. It checks for updates each time a new block is added.
+// Subsequent updates are sent only when the transaction status changes.
+// The optional block_id parameter is ignored, as status changes are not stored and historical data cannot be sent.
 func (h *Handler) SubscribeTxnStatus(ctx context.Context, txHash felt.Felt, _ *BlockID) (*SubscriptionID, *jsonrpc.Error) {
 	var (
 		lastKnownStatus, lastSendStatus *TransactionStatus
diff --git a/rpc/handlers.go b/rpc/handlers.go
index c391aac5ac..58c87a71c7 100644
--- a/rpc/handlers.go
+++ b/rpc/handlers.go
@@ -339,7 +339,7 @@ func (h *Handler) Methods() ([]jsonrpc.Method, string) { //nolint: funlen
 		},
 		{
 			Name:    "starknet_subscribeTransactionStatus",
-			Params:  []jsonrpc.Parameter{{Name: "transaction_hash"}, {Name: "block"}},
+			Params:  []jsonrpc.Parameter{{Name: "transaction_hash"}, {Name: "block", Optional: true}},
 			Handler: h.SubscribeTxnStatus,
 		},
 		{