diff --git a/lib/radix.js b/lib/radix.js
index 2eb7b311..8a5b59a0 100644
--- a/lib/radix.js
+++ b/lib/radix.js
@@ -65,7 +65,7 @@
 			p = pre.slice(); p.push(key);
 			pt = p.join('');
 			if(u !== start && pt < (start||'').slice(0,pt.length)){ continue }
-			if(u !== end && end < pt){ continue }
+			if(u !== end && (end || '\uffff') < pt){ continue }
 			if(u !== (tmp = tree[''])){
 				tmp = cb(tmp, pt, key, pre);
 				if(u !== tmp){ return tmp }