--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -356,17 +356,17 @@ pref("media.apple.mp4.enabled", true);
 // media.gmp.storage.version.observed, and if the versions don't match,
 // we clear storage and set media.gmp.storage.version.observed=expected.
 // This provides a mechanism to clear GMP storage when non-compatible
 // changes are made.
 pref("media.gmp.storage.version.expected", 1);
 
 // Filter what triggers user notifications.
 // See DecoderDoctorDocumentWatcher::ReportAnalysis for details.
-pref("media.decoder-doctor.notifications-allowed", "MediaWidevineNoWMFNoSilverlight");
+pref("media.decoder-doctor.notifications-allowed", "MediaWMFNeeded, MediaWidevineNoWMFNoSilverlight");
 // Whether we report partial failures.
 pref("media.decoder-doctor.verbose", false);
 
 // Whether to suspend decoding of videos in background tabs.
 pref("media.suspend-bkgnd-video.enabled", true);
 
 #ifdef MOZ_WEBRTC
 pref("media.navigator.enabled", true);