diff --git a/src/Core/Constants.cs b/src/Core/Constants.cs
index fb3757daab..970bcb4082 100644
--- a/src/Core/Constants.cs
+++ b/src/Core/Constants.cs
@@ -118,6 +118,7 @@ public static class FeatureFlagKeys
     public const string ExportAttachments = "export-attachments";
 
     /* Vault Team */
+    public const string PM8851_BrowserOnboardingNudge = "pm-8851-browser-onboarding-nudge";
     public const string PM9111ExtensionPersistAddEditForm = "pm-9111-extension-persist-add-edit-form";
     public const string NewDeviceVerificationPermanentDismiss = "new-device-permanent-dismiss";
     public const string NewDeviceVerificationTemporaryDismiss = "new-device-temporary-dismiss";