diff --git a/core/block.js b/core/block.js
index 06fc254ff..32e2403e8 100644
--- a/core/block.js
+++ b/core/block.js
@@ -1353,7 +1353,7 @@ Blockly.Block.prototype.toString = function(opt_maxLength, opt_emptyToken) {
   var text = [];
   var emptyFieldPlaceholder = opt_emptyToken || '?';
   if (this.collapsed_) {
-    text.push(this.getInput('_TEMP_COLLAPSED_INPUT').fieldRow[0].text_);
+    text.push(this.getInput('_TEMP_COLLAPSED_INPUT').fieldRow[0].getText());
   } else {
     for (var i = 0, input; input = this.inputList[i]; i++) {
       for (var j = 0, field; field = input.fieldRow[j]; j++) {