diff --git a/chrome/content/zotero/preferences/preferences_cite.js b/chrome/content/zotero/preferences/preferences_cite.js
index 7368a2052a..bb14d1d228 100644
--- a/chrome/content/zotero/preferences/preferences_cite.js
+++ b/chrome/content/zotero/preferences/preferences_cite.js
@@ -107,7 +107,6 @@ Zotero_Preferences.Cite = {
 		fp.init(window, Zotero.getString("zotero.preferences.styles.addStyle"), nsIFilePicker.modeOpen);
 		
 		fp.appendFilter("CSL Style", "*.csl");
-		fp.appendFilter("ENS Style", "*.ens");
 		
 		var rv = fp.show();
 		if (rv == nsIFilePicker.returnOK || rv == nsIFilePicker.returnReplace) {