diff --git a/firefox-redhat-default-prefs.js b/firefox-redhat-default-prefs.js
index 4627415..00e945b 100644
--- a/firefox-redhat-default-prefs.js
+++ b/firefox-redhat-default-prefs.js
@@ -19,4 +19,6 @@ pref("startup.homepage_override_url",       "");
 pref("browser.startup.homepage",            "data:text/plain,browser.startup.homepage=about:newtab");
 pref("browser.newtabpage.pinned",           '[{"url":"http://start.fedoraproject.org/","title":"Fedora Project - Start Page"}]');
 pref("geo.wifi.uri", "https://location.services.mozilla.com/v1/geolocate?key=%MOZILLA_API_KEY%");
-pref("media.gmp-gmpopenh264.provider.enabled",false);
\ No newline at end of file
+pref("media.gmp-gmpopenh264.provider.enabled",false);
+pref("media.gmp-gmpopenh264.autoupdate",false);
+pref("media.gmp-gmpopenh264.enabled",false);
\ No newline at end of file