diff --git a/chrome/content/zotero/xpcom/translation/translate.js b/chrome/content/zotero/xpcom/translation/translate.js
index 0e8df5c829..5b0e2a7f99 100644
--- a/chrome/content/zotero/xpcom/translation/translate.js
+++ b/chrome/content/zotero/xpcom/translation/translate.js
@@ -771,7 +771,7 @@ Zotero.Translate.Sandbox = {
 						delete attachment.path;
 					}
 					
-					if(attachment.url) {
+					if (attachment.url && attachment.proxy !== false) {
 						// Remap attachment (but not link) URLs
 						// TODO: provide both proxied and un-proxied URLs (also for documents)
 						//   because whether the attachment is attached as link or file