--- a/netwerk/base/security-prefs.js
+++ b/netwerk/base/security-prefs.js
@@ -29,16 +29,19 @@ pref("security.ssl3.dhe_rsa_aes_256_sha"
 pref("security.ssl3.ecdhe_rsa_rc4_128_sha", true);
 pref("security.ssl3.ecdhe_ecdsa_rc4_128_sha", true);
 pref("security.ssl3.rsa_aes_128_sha", true);
 pref("security.ssl3.rsa_aes_256_sha", true);
 pref("security.ssl3.rsa_des_ede3_sha", true);
 pref("security.ssl3.rsa_rc4_128_sha", true);
 pref("security.ssl3.rsa_rc4_128_md5", true);
 
+pref("security.content.signature.root_hash",
+     "97:E8:BA:9C:F1:2F:B3:DE:53:CC:42:A4:E6:57:7E:D6:4D:F4:93:C2:47:B4:14:FE:A0:36:81:8D:38:23:56:0E");
+
 pref("security.default_personal_cert",   "Ask Every Time");
 pref("security.remember_cert_checkbox_default_setting", true);
 pref("security.ask_for_password",        0);
 pref("security.password_lifetime",       30);
 
 pref("security.OCSP.enabled", 1);
 pref("security.OCSP.require", false);
 pref("security.OCSP.GET.enabled", false);