diff --git a/jquery.timeago.js b/jquery.timeago.js
index 0db9f5f..1d0fe7e 100644
--- a/jquery.timeago.js
+++ b/jquery.timeago.js
@@ -86,16 +86,8 @@
         years < 1.5 && substitute($l.year, 1) ||
         substitute($l.years, Math.round(years));
 
-      switch ($l.wordSeparator) {
-        case undefined:
-          var separator = " ";
-          break;
-        case null:
-          var separator = "";
-          break;
-        default:
-          var separator = $l.wordSeparator;
-      }
+      var separator = $l.wordSeparator || "";
+      if ($l.wordSeparator === undefined) { separator = " "; }
       return $.trim([prefix, words, suffix].join(separator));
     },
     parse: function(iso8601) {