diff --git a/components/script_bindings/webidls/AbortController.webidl b/components/script_bindings/webidls/AbortController.webidl
index f3b9636d650..bb20ec24955 100644
--- a/components/script_bindings/webidls/AbortController.webidl
+++ b/components/script_bindings/webidls/AbortController.webidl
@@ -3,7 +3,7 @@
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
 // https://dom.spec.whatwg.org/#interface-abortcontroller
-[Exposed=*]
+[Exposed=*, Pref="dom_abort_controller_enabled"]
 interface AbortController {
   constructor();
 
diff --git a/components/script_bindings/webidls/AbortSignal.webidl b/components/script_bindings/webidls/AbortSignal.webidl
index bea70e41739..1ec9fbcd3a4 100644
--- a/components/script_bindings/webidls/AbortSignal.webidl
+++ b/components/script_bindings/webidls/AbortSignal.webidl
@@ -4,7 +4,7 @@
 
 // https://dom.spec.whatwg.org/#abortsignal
 
-[Exposed=*]
+[Exposed=*, Pref="dom_abort_controller_enabled"]
 interface AbortSignal : EventTarget {
   readonly attribute boolean aborted;
   readonly attribute any reason;