diff --git a/cmd/soroban-rpc/internal/preflight/preflight.go b/cmd/soroban-rpc/internal/preflight/preflight.go
index 3b920a08..12ce9745 100644
--- a/cmd/soroban-rpc/internal/preflight/preflight.go
+++ b/cmd/soroban-rpc/internal/preflight/preflight.go
@@ -160,7 +160,6 @@ func getLedgerInfo(params PreflightParameters) (C.ledger_info_t, error) {
 		sequence_number:    C.uint32_t(simulationLedgerSeq),
 		protocol_version:   20,
 		timestamp:          C.uint64_t(time.Now().Unix()),
-		network_passphrase: C.CString(params.NetworkPassphrase),
 		// Current base reserve is 0.5XLM (in stroops)
 		base_reserve: 5_000_000,
 	}