diff --git a/Sources/AppDelegate.swift b/Sources/AppDelegate.swift
index debc0e0978ed..e1db751ee897 100644
--- a/Sources/AppDelegate.swift
+++ b/Sources/AppDelegate.swift
@@ -311,6 +311,10 @@ final class AppDelegate: NSObject, NSApplicationDelegate, UNUserNotificationCent
             options.debug = false
             #endif
             options.sendDefaultPii = true
+            // Disable automatic HTTP client error capture — browser panels load
+            // user-visited sites whose HTTP errors (e.g. 500 for /favicon.ico)
+            // are not cmux bugs and create Sentry noise. See #241.
+            options.enableCaptureFailedRequests = false
         }
 
         if !isRunningUnderXCTest {