diff --git a/dom/webidl/Node.webidl b/dom/webidl/Node.webidl
index bf2c1c4dee..a4770fb374 100644
--- a/dom/webidl/Node.webidl
+++ b/dom/webidl/Node.webidl
@@ -38,7 +38,7 @@ interface Node : EventTarget {
   readonly attribute boolean isConnected;
   [Pure]
   readonly attribute Document? ownerDocument;
-  [Pure, Pref="dom.getRootNode.enabled"]
+  [Pure, Pref="dom.webcomponents.enabled"]
   Node getRootNode(optional GetRootNodeOptions options);
   [Pure]
   readonly attribute Node? parentNode;
diff --git a/modules/libpref/init/all.js b/modules/libpref/init/all.js
index 5389928f85..51296a21ac 100644
--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -1239,11 +1239,8 @@ pref("privacy.trackingprotection.pbmode.enabled",  false);
 pref("dom.event.contextmenu.enabled",       true);
 pref("dom.event.clipboardevents.enabled",   true);
 
-// TODO: merge these two prefs!
 // Enable Google WebComponents?
 pref("dom.webcomponents.enabled",           true);
-// Whether WC getRootNode is available
-pref("dom.getRootNode.enabled",             true);
 
 pref("javascript.enabled",                  true);
 // Enable Array.prototype.values