diff --git a/public/javascripts/homework.js b/public/javascripts/homework.js
index ad3ad02fe..f1b6e1814 100644
--- a/public/javascripts/homework.js
+++ b/public/javascripts/homework.js
@@ -184,6 +184,14 @@ $(function(){
     $("#BluePopupBox").on('click', 'a.icon_add', function(){
         var html = bt('t:test-answer-list', null);
         $(this).parent('.mt10').after(html);
+        var inputs = document.getElementsByName("program[input][]");
+        var outputs = document.getElementsByName("program[output][]");
+        if (inputs.length == outputs.length) {
+            for (var i=0; i<inputs.length; i++) {
+                autoTextarea2(inputs[i], outputs[i]);
+                autoTextarea2(outputs[i], inputs[i]);
+            }
+        }
 
     });
     $("#BluePopupBox").on('click', 'a.icon_remove', function(){