diff --git a/UI/WebServerResources/UIxContactsUserFolders.js b/UI/WebServerResources/UIxContactsUserFolders.js
index a766acdf6..a11e3a2f0 100644
--- a/UI/WebServerResources/UIxContactsUserFolders.js
+++ b/UI/WebServerResources/UIxContactsUserFolders.js
@@ -31,7 +31,7 @@ function addUserLineToTree(tree, parent, line) {
 
 	var userInfos = line.split(":");
 	var email = userInfos[1] + " <" + userInfos[2] + ">";
-	if (!userInfos[3].empty())
+	if (userInfos[3] && !userInfos[3].empty())
 		email += ", " + userInfos[3]; // extra contact info
 	tree.add(parent, 0, email, 0, '#', userInfos[0], 'person',
 					 '', '',