diff --git a/cmd/soroban-rpc/lib/preflight/src/lib.rs b/cmd/soroban-rpc/lib/preflight/src/lib.rs
index b762db60..70bb909c 100644
--- a/cmd/soroban-rpc/lib/preflight/src/lib.rs
+++ b/cmd/soroban-rpc/lib/preflight/src/lib.rs
@@ -38,6 +38,8 @@ mod curr {
     pub(crate) use soroban_simulation_curr as soroban_simulation;
     #[allow(clippy::duplicate_mod)]
     pub(crate) mod shared;
+
+    pub(crate) const PROTOCOL: u32 = soroban_env_host::meta::INTERFACE_VERSION.protocol;
 }
 
 #[path = "."]
@@ -46,6 +48,9 @@ mod prev {
     pub(crate) use soroban_simulation_prev as soroban_simulation;
     #[allow(clippy::duplicate_mod)]
     pub(crate) mod shared;
+
+    pub(crate) const PROTOCOL: u32 = soroban_env_host::meta::get_ledger_protocol_version(
+        soroban_env_host::meta::INTERFACE_VERSION);
 }
 
 use std::cell::RefCell;
diff --git a/cmd/soroban-rpc/lib/preflight/src/shared.rs b/cmd/soroban-rpc/lib/preflight/src/shared.rs
index a517eadd..6ec6b7a6 100644
--- a/cmd/soroban-rpc/lib/preflight/src/shared.rs
+++ b/cmd/soroban-rpc/lib/preflight/src/shared.rs
@@ -41,8 +41,6 @@ use std::convert::TryFrom;
 use std::ptr::null_mut;
 use std::rc::Rc;
 
-pub(crate) const PROTOCOL: u32 = meta::get_ledger_protocol_version(meta::INTERFACE_VERSION);
-
 fn fill_ledger_info(c_ledger_info: CLedgerInfo, network_config: &NetworkConfig) -> LedgerInfo {
     let network_passphrase = unsafe { from_c_string(c_ledger_info.network_passphrase) };
     let mut ledger_info = LedgerInfo {