diff --git a/packages/rpc/src/RpcSerialization.ts b/packages/rpc/src/RpcSerialization.ts
index f65fda78e8..2ca56e431c 100644
--- a/packages/rpc/src/RpcSerialization.ts
+++ b/packages/rpc/src/RpcSerialization.ts
@@ -122,4 +122,4 @@ export const layerNdjson: Layer.Layer<RpcSerialization> = Layer.effect(RpcSerial
  * @since 1.0.0
  * @category serialization
  */
-export const layeMsgPack: Layer.Layer<RpcSerialization> = Layer.succeed(RpcSerialization, msgPack)
+export const layerMsgPack: Layer.Layer<RpcSerialization> = Layer.succeed(RpcSerialization, msgPack)
diff --git a/packages/rpc/src/RpcServer.ts b/packages/rpc/src/RpcServer.ts
index 97d85cb6cb..0c14817b04 100644
--- a/packages/rpc/src/RpcServer.ts
+++ b/packages/rpc/src/RpcServer.ts
@@ -623,6 +623,7 @@ export class Protocol extends Context.Tag("@effect/rpc/RpcServer/Protocol")<Prot
   readonly send: (clientId: number, response: Uint8Array | string) => Effect.Effect<void>
   readonly end: (clientId: number) => Effect.Effect<void>
   readonly supportsAck: boolean
+  readonly supportsTransferables: boolean
 }>() {}
 
 /**
@@ -666,7 +667,8 @@ export const makeProtocolSocketServer = Effect.gen(function*() {
     end(_clientId) {
       return Effect.void
     },
-    supportsAck: true
+    supportsAck: true,
+    supportsTransferables: false
   })
 })
 
@@ -731,7 +733,8 @@ export const makeProtocolWithHttpAppWebsocket: Effect.Effect<
     end(_clientId) {
       return Effect.void
     },
-    supportsAck: true
+    supportsAck: true,
+    supportsTransferables: false
   })
 
   return { protocol, httpApp } as const
@@ -848,7 +851,8 @@ export const makeProtocolWithHttpApp: Effect.Effect<
       if (!client) return Effect.void
       return client.end
     },
-    supportsAck: false
+    supportsAck: false,
+    supportsTransferables: false
   })
 
   return { protocol, httpApp } as const