diff --git a/chrome/content/zotero/xpcom/zotero.js b/chrome/content/zotero/xpcom/zotero.js
index 753bf5015..51e30ae54 100644
--- a/chrome/content/zotero/xpcom/zotero.js
+++ b/chrome/content/zotero/xpcom/zotero.js
@@ -2089,8 +2089,14 @@ Zotero.Prefs = new function(){
 	}
 	
 	
-	this.clear = function (pref) {
-		this.prefBranch.clearUserPref(pref);
+	this.clear = function (pref, global) {
+		if (global) {
+			var branch = Services.prefs.getBranch("");
+		}
+		else {
+			var branch = this.prefBranch;
+		}
+		branch.clearUserPref(pref);
 	}