diff --git a/chrome/content/zotero-platform/mac/itembox.css b/chrome/content/zotero-platform/mac/itembox.css
index 8ff82d5a86..449e339c3f 100644
--- a/chrome/content/zotero-platform/mac/itembox.css
+++ b/chrome/content/zotero-platform/mac/itembox.css
@@ -29,4 +29,10 @@ textbox
 {
 	margin: -1px 5px -1px 0;
 	padding: 0;
-}
\ No newline at end of file
+}
+
+
+/* BEGIN 2X BLOCK -- DO NOT EDIT MANUALLY -- USE 2XIZE */
+@media (min-resolution: 1.5dppx) {
+	.creator-type-label > image  { list-style-image: url('chrome://zotero/skin/mac/arrow-down@2x.png'); }
+}
diff --git a/chrome/skin/default/zotero/mac/arrow-down@2x.png b/chrome/skin/default/zotero/mac/arrow-down@2x.png
new file mode 100644
index 0000000000..988b46a432
Binary files /dev/null and b/chrome/skin/default/zotero/mac/arrow-down@2x.png differ