diff --git a/chrome/content/zotero/xpcom/data/item.js b/chrome/content/zotero/xpcom/data/item.js
index 3eaeca987..8dae49950 100644
--- a/chrome/content/zotero/xpcom/data/item.js
+++ b/chrome/content/zotero/xpcom/data/item.js
@@ -910,7 +910,8 @@ Zotero.Item.prototype.getDisplayTitle = function (includeAuthorAndDate) {
 		
 		if (participants.length > 0) {
 			let names = [];
-			for (let i=0; i<4; i++) {
+			let max = Math.min(4, participants.length);
+			for (let i=0; i<max; i++) {
 				names.push(participants[i].ref.lastName);
 			}
 			switch (names.length) {