diff --git a/lib/index.js b/lib/index.js
index c8d1790..cf4dbd1 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -86,7 +86,7 @@ Table.prototype.toString = function (){
   var ret = ''
     , options = this.options
     , style = options.style
-    , head = options.head
+    , head = options.head || []
     , chars = options.chars
     , truncater = options.truncate
       , colWidths = options.colWidths || new Array(this.head.length)