diff --git a/core/renderers/common/i_path_object.js b/core/renderers/common/i_path_object.js
index f9c7855fc..cafb1d537 100644
--- a/core/renderers/common/i_path_object.js
+++ b/core/renderers/common/i_path_object.js
@@ -119,4 +119,4 @@ Blockly.blockRendering.IPathObject.prototype.updateMovable;
  * @param {boolean} enable True if styling should be added.
  * @package
  */
-Blockly.blockRendering.PathObject.prototype.updateReplacementHighlight;
+Blockly.blockRendering.IPathObject.prototype.updateReplacementHighlight;