diff --git a/packages/core/src/part.mjs b/packages/core/src/part.mjs
index 16257650cd4..eefd0c94d05 100644
--- a/packages/core/src/part.mjs
+++ b/packages/core/src/part.mjs
@@ -81,6 +81,7 @@ Part.prototype.attr = function (name, value, overwrite = false) {
 /**
  * Gets a free ID to use in the part
  *
+ * @param {string} prefix - An optional prefix to apply to the ID
  * @return {string} id - A free ID to use
  */
 Part.prototype.getId = function (prefix = '') {