diff --git a/dom/webidl/Sanitizer.webidl b/dom/webidl/Sanitizer.webidl
--- a/dom/webidl/Sanitizer.webidl
+++ b/dom/webidl/Sanitizer.webidl
@@ -19,7 +19,7 @@
   sequence<DOMString> removed;
 };
 
-[Exposed=Window, SecureContext, Pref="dom.security.sanitizer.enabled"]
+[Exposed=Window, SecureContext]
 interface Sanitizer {
   [Throws]
   constructor(optional SanitizerOptions options = {}); // optionality still discussed in spec