diff --git a/lib/mixins/element-mixin.js b/lib/mixins/element-mixin.js
index 3978a269d1..74205e1fb7 100644
--- a/lib/mixins/element-mixin.js
+++ b/lib/mixins/element-mixin.js
@@ -578,7 +578,7 @@ export const ElementMixin = dedupingMixin(base => {
     }
 
     /**
-     * @param {string} property
+     * @param {string} property Name of the property
      * @returns {boolean} Returns true if the property default can be applied.
      */
     // A property default can be overridden when a `properties` property with
diff --git a/lib/mixins/properties-changed.js b/lib/mixins/properties-changed.js
index ec9eff9be8..d200a3dffc 100644
--- a/lib/mixins/properties-changed.js
+++ b/lib/mixins/properties-changed.js
@@ -298,7 +298,7 @@ export const PropertiesChanged = dedupingMixin(
     /* eslint-enable */
 
     /**
-     * @param {string} property
+     * @param {string} property Name of the property
      * @return {boolean} Returns true if the property is pending.
      */
     _isPropertyPending(property) {