diff --git a/lib/mixins/property-effects.html b/lib/mixins/property-effects.html
index edd30a0d17..216b21b19f 100644
--- a/lib/mixins/property-effects.html
+++ b/lib/mixins/property-effects.html
@@ -2631,7 +2631,7 @@
   });
 
   /**
-   * Helper api for enqueing client dom created by a host element.
+   * Helper api for enqueuing client dom created by a host element.
    *
    * By default elements are flushed via `_flushProperties` when
    * `connectedCallback` is called. Elements attach their client dom to
diff --git a/lib/utils/async.html b/lib/utils/async.html
index ff07972100..1283856349 100644
--- a/lib/utils/async.html
+++ b/lib/utils/async.html
@@ -153,7 +153,7 @@
     },
 
     /**
-     * Async interface for enqueueing callbacks that run at microtask timing.
+     * Async interface for enqueuing callbacks that run at microtask timing.
      *
      * Note that microtask timing is achieved via a single `MutationObserver`,
      * and thus callbacks enqueued with this API will all run in a single
@@ -163,7 +163,7 @@
      *
      * @namespace
      * @memberof Polymer.Async
-     * @summary Async interface for enqueueing callbacks that run at microtask
+     * @summary Async interface for enqueuing callbacks that run at microtask
      *   timing.
      */
     microTask: {