diff --git a/lib/legacy/legacy-element-mixin.js b/lib/legacy/legacy-element-mixin.js
index e2e136cba3..cfa17c6f0d 100644
--- a/lib/legacy/legacy-element-mixin.js
+++ b/lib/legacy/legacy-element-mixin.js
@@ -144,9 +144,10 @@ export const LegacyElementMixin = dedupingMixin((base) => {
     }
 
     /**
+     * Sets the value of an attribute.
      * @override
-     * @param {string} name
-     * @param {string} value
+     * @param {string} name The name of the attribute to change.
+     * @param {string} value The new attribute value.
      */
     setAttribute(name, value) {
       if (legacyNoObservedAttributes && !this._legacyForceObservedAttributes) {
@@ -160,8 +161,9 @@ export const LegacyElementMixin = dedupingMixin((base) => {
     }
 
     /**
+     * Removes an attribute.
      * @override
-     * @param {string} name
+     * @param {string} name The name of the attribute to remove.
      */
     removeAttribute(name) {
       if (legacyNoObservedAttributes && !this._legacyForceObservedAttributes) {