diff --git a/modules/libpref/init/all.js b/modules/libpref/init/all.js
index 17c6021044..85aacfd61b 100644
--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -5178,7 +5178,7 @@ pref("narrate.filter-voices", true);
 pref("dom.audiochannel.mutedByDefault", false);
 
 // HTML <dialog> element
-pref("dom.dialog_element.enabled", false);
+pref("dom.dialog_element.enabled", true);
 
 // Enable <details> and <summary> tags.
 pref("dom.details_element.enabled", true);