diff --git a/src/defaults/preferences/torlauncher-prefs.js b/src/defaults/preferences/torlauncher-prefs.js
index 55fe38ca1483c1880221c586fb448120974b972e..472b763f0328350617a0827626272acc78426422 100644
--- a/src/defaults/preferences/torlauncher-prefs.js
+++ b/src/defaults/preferences/torlauncher-prefs.js
@@ -38,7 +38,7 @@ pref("extensions.torlauncher.control_ipc_path", "");
 // careful).
 pref("extensions.torlauncher.socks_port_use_ipc", false);
 pref("extensions.torlauncher.socks_ipc_path", "");
-pref("extensions.torlauncher.socks_port_flags", "IPv6Traffic PreferIPv6 KeepAliveIsolateSOCKSAuth");
+pref("extensions.torlauncher.socks_port_flags", "ExtendedErrors IPv6Traffic PreferIPv6 KeepAliveIsolateSOCKSAuth");
 
 // The tor_path is relative to the application directory. On Linux and
 // Windows this is the Browser/ directory that contains the firefox