diff --git a/core/flyout_base.js b/core/flyout_base.js
index 305be33e0..c56ea6253 100644
--- a/core/flyout_base.js
+++ b/core/flyout_base.js
@@ -600,9 +600,9 @@ Blockly.Flyout.prototype.onMouseDown_ = function(e) {
  * Helper function to get the list of variables that have been added to the
  * workspace after adding a new block, using the given list of variables that
  * were in the workspace before the new block was added.
- * @param {!Array.<Blockly.VariableModel>} originalVariables The array of
+ * @param {!Array.<!Blockly.VariableModel>} originalVariables The array of
  *     variables that existed in the workspace before adding the new block.
- * @return {!Array.<Blockly.VariableModel>} The new array of variables that were
+ * @return {!Array.<!Blockly.VariableModel>} The new array of variables that were
  *     freshly added to the workspace after creating the new block, or [] if no
  *     new variables were added to the workspace.
  * @private