diff --git a/toolkit/components/remotebrowserutils/RemoteWebNavigation.js b/toolkit/components/remotebrowserutils/RemoteWebNavigation.js
index dd0b8417edce..e7df359e29c7 100644
--- a/toolkit/components/remotebrowserutils/RemoteWebNavigation.js
+++ b/toolkit/components/remotebrowserutils/RemoteWebNavigation.js
@@ -65,10 +65,12 @@ RemoteWebNavigation.prototype = {
   gotoIndex(aIndex) {
     this._sendMessage("WebNavigation:GotoIndex", {index: aIndex});
   },
-  loadURI(aURI, aLoadFlags, aReferrer, aPostData, aHeaders) {
+  loadURI(aURI, aLoadFlags, aReferrer, aPostData, aHeaders,
+          aTriggeringPrincipal) {
     this.loadURIWithOptions(aURI, aLoadFlags, aReferrer,
                             Ci.nsIHttpChannel.REFERRER_POLICY_UNSET,
-                            aPostData, aHeaders, null);
+                            aPostData, aHeaders, null,
+                            aTriggeringPrincipal);
   },
   loadURIWithOptions(aURI, aLoadFlags, aReferrer, aReferrerPolicy,
                      aPostData, aHeaders, aBaseURI, aTriggeringPrincipal) {