diff --git a/src/constants.ts b/src/constants.ts
index e434fbff1..cbc360d23 100644
--- a/src/constants.ts
+++ b/src/constants.ts
@@ -51,9 +51,9 @@ export const TOOLBAR_CONTAINER_CLASS = 'toolbar-global-fade-container'
 
 /**
  * PREVIEW - MAY CHANGE WITHOUT WARNING - DO NOT USE IN PRODUCTION
- * sentinel value for distinct id, signals that the server should replace it with a hash
+ * Sentinel value for distinct id, device id, session id. Signals that the server should generate the value
  * */
-export const SENTINEL_COOKIELESS_SERVER_HASH = '$sentinel_cookieless_server_hash'
+export const COOKIELESS_SENTINEL_VALUE = '$posthog_cklsh'
 
 export const WEB_EXPERIMENTS = '$web_experiments'
 
diff --git a/src/posthog-core.ts b/src/posthog-core.ts
index 11ac097fb..ab4e2809c 100644
--- a/src/posthog-core.ts
+++ b/src/posthog-core.ts
@@ -19,7 +19,7 @@ import {
     PEOPLE_DISTINCT_ID_KEY,
     USER_STATE,
     ENABLE_PERSON_PROCESSING,
-    SENTINEL_COOKIELESS_SERVER_HASH,
+    COOKIELESS_SENTINEL_VALUE,
 } from './constants'
 import { SessionRecording } from './extensions/replay/sessionrecording'
 import { Decide } from './decide'
@@ -1538,7 +1538,7 @@ export class PostHog {
         this.persistence?.set_property(USER_STATE, 'anonymous')
         this.sessionManager?.resetSessionId()
         const uuid = this.config.__use_cookieless_server_hash
-            ? SENTINEL_COOKIELESS_SERVER_HASH
+            ? COOKIELESS_SENTINEL_VALUE
             : this.config.get_device_id(uuidv7())
         this.register_once(
             {
@@ -2058,7 +2058,7 @@ export class PostHog {
 
     private _create_device_id(): string {
         if (this.config.__use_cookieless_server_hash) {
-            return SENTINEL_COOKIELESS_SERVER_HASH
+            return COOKIELESS_SENTINEL_VALUE
         }
         return this.config.get_device_id(uuidv7())
     }
diff --git a/src/sessionid.ts b/src/sessionid.ts
index 513593db6..83d906c58 100644
--- a/src/sessionid.ts
+++ b/src/sessionid.ts
@@ -1,5 +1,5 @@
 import { PostHogPersistence } from './posthog-persistence'
-import { SENTINEL_COOKIELESS_SERVER_HASH, SESSION_ID } from './constants'
+import { COOKIELESS_SENTINEL_VALUE, SESSION_ID } from './constants'
 import { sessionStore } from './storage'
 import { PostHogConfig, SessionIdChangedCallback } from './types'
 import { uuid7ToTimestampMs, uuidv7 } from './uuidv7'
@@ -231,7 +231,7 @@ export class SessionIdManager {
         const activityTimeout = !readOnly && Math.abs(timestamp - lastTimestamp) > this.sessionTimeoutMs
         if (noSessionId || activityTimeout || sessionPastMaximumLength) {
             if (this.config.__use_cookieless_server_hash) {
-                sessionId = SENTINEL_COOKIELESS_SERVER_HASH
+                sessionId = COOKIELESS_SENTINEL_VALUE
             } else {
                 sessionId = this._sessionIdGenerator()
             }