diff --git a/extensions/firefox/content/PdfStreamConverter.jsm b/extensions/firefox/content/PdfStreamConverter.jsm
index d75e94f5a..f6f792f45 100644
--- a/extensions/firefox/content/PdfStreamConverter.jsm
+++ b/extensions/firefox/content/PdfStreamConverter.jsm
@@ -1011,14 +1011,6 @@ PdfStreamConverter.prototype = {
 
     // Keep the URL the same so the browser sees it as the same.
     channel.originalURI = aRequest.URI;
-//#if MOZCENTRAL
-    channel.loadInfo.resultPrincipalURI = aRequest.loadInfo.resultPrincipalURI;
-//#else
-    if ("resultPrincipalURI" in aRequest.loadInfo) {
-      channel.loadInfo.resultPrincipalURI =
-        aRequest.loadInfo.resultPrincipalURI;
-    }
-//#endif
     channel.loadGroup = aRequest.loadGroup;
     channel.loadInfo.originAttributes = aRequest.loadInfo.originAttributes;