diff --git a/js/client.js b/js/client.js
index 2a58d4884..8b65e737b 100644
--- a/js/client.js
+++ b/js/client.js
@@ -797,7 +797,7 @@
 					}
 					var id = toId(name);
 					var isTeambuilderFormat = challengeShow && searchShow && !team;
-					var teambuilderFormat;
+					var teambuilderFormat = undefined;
 					if (isTeambuilderFormat) {
 						var parenPos = name.indexOf('(');
 						if (parenPos > 0 && name.charAt(name.length-1) === ')') {