diff --git a/packages/typert/protocol/src/index.ts b/packages/typert/protocol/src/index.ts
index 9910ec2469..a677ede21b 100644
--- a/packages/typert/protocol/src/index.ts
+++ b/packages/typert/protocol/src/index.ts
@@ -98,7 +98,7 @@ export interface RemoteMethodMarker {
   /** Endpoint method when it differs from the implementation member. */
   readonly exportName?: string
   /** Stream methods yield many independently validated result items. */
-  readonly mode?: RemoteMethodOptions['mode']
+  readonly mode?: 'stream'
   readonly invocation: RemoteInvocationMarker
 }
 
@@ -122,7 +122,7 @@ interface RemoteInitializerContext<This extends object> {
 
 interface StoredRemoteMethodMarker {
   readonly exportName?: string
-  readonly mode?: RemoteMethodOptions['mode']
+  readonly mode?: 'stream'
   readonly invocation: RemoteInvocationMarker
 }
 
@@ -212,7 +212,7 @@ function remoteOptionMode(options: object): unknown {
 
 function remoteDecorator(
   invocation: RemoteInvocationMarker,
-  mode?: RemoteMethodOptions['mode'],
+  mode?: 'stream',
   exportName?: string,
 ): RemoteMethodDecorator {
   return function <This extends object, Args extends unknown[], Result>(
@@ -271,7 +271,7 @@ function readRemoteMethodDescriptor(prototype: object): RemoteMethodDescriptorV1
 function addMarkerInitializer<This extends object>(
   context: RemoteInitializerContext<This>,
   invocation: RemoteInvocationMarker,
-  mode?: RemoteMethodOptions['mode'],
+  mode?: 'stream',
   exportName?: string,
 ): void {
   if (context.private || context.static || typeof context.name !== 'string') {
@@ -291,7 +291,7 @@ function mark(
   prototype: object,
   method: string,
   invocation: RemoteInvocationMarker,
-  mode?: RemoteMethodOptions['mode'],
+  mode?: 'stream',
   exportName?: string,
 ): void {
   const descriptor = readRemoteMethodDescriptor(prototype)