1 files changed, 3 insertions, 1 deletions
diff --git a/browser/base/content/nsContextMenu.js b/browser/base/content/nsContextMenu.js
index ddf695202..cd93a803c 100644
--- a/browser/base/content/nsContextMenu.js
+++ b/browser/base/content/nsContextMenu.js
@@ -1147,10 +1147,12 @@ nsContextMenu.prototype = {
   // Change current window to the URL of the image, video, or audio.
   viewMedia: function(e) {
     let referrerURI = gContextMenuContentData.documentURIObject;
+    let systemPrincipal = Services.scriptSecurityManager.getSystemPrincipal();
     if (this.onCanvas) {
       this._canvasToBlobURL(this.target).then(function(blobURL) {
         openUILink(blobURL, e, { disallowInheritPrincipal: true,
-                                 referrerURI: referrerURI });
+                                 referrerURI: referrerURI,
+                                 originPrincipal: systemPrincipal});
       }, Cu.reportError);
     }
     else {