diff --git a/wp-admin/admin-post.php b/wp-admin/admin-post.php
index 1202fbe9b6..b4aed5275b 100644
--- a/wp-admin/admin-post.php
+++ b/wp-admin/admin-post.php
@@ -34,7 +34,7 @@ $action = empty( $_REQUEST['action'] ) ? '' : $_REQUEST['action'];
 if ( ! wp_validate_auth_cookie() ) {
 	if ( empty( $action ) ) {
 		/**
-		 * Fires on a non-authenticated admin post request where no action was supplied.
+		 * Fires on a non-authenticated admin post request where no action is supplied.
 		 *
 		 * @since 2.6.0
 		 */
@@ -53,7 +53,7 @@ if ( ! wp_validate_auth_cookie() ) {
 } else {
 	if ( empty( $action ) ) {
 		/**
-		 * Fires on an authenticated admin post request where no action was supplied.
+		 * Fires on an authenticated admin post request where no action is supplied.
 		 *
 		 * @since 2.6.0
 		 */
diff --git a/wp-admin/async-upload.php b/wp-admin/async-upload.php
index 19eaf99072..d29884446d 100644
--- a/wp-admin/async-upload.php
+++ b/wp-admin/async-upload.php
@@ -101,7 +101,7 @@ if ( $_REQUEST['short'] ) {
 	// Short form response - attachment ID only.
 	echo $id;
 } else {
-	// Long form response - big chunk o html.
+	// Long form response - big chunk of html.
 	$type = $_REQUEST['type'];
 
 	/**
diff --git a/wp-admin/custom-background.php b/wp-admin/custom-background.php
index 39282459fd..e5151015ec 100644
--- a/wp-admin/custom-background.php
+++ b/wp-admin/custom-background.php
@@ -525,7 +525,7 @@ class Custom_Background {
 	/**
 	 * Ajax handler for adding custom background context to an attachment.
 	 *
-	 * Triggered when the user adds a new background image from the
+	 * Triggers when the user adds a new background image from the
 	 * Media Manager.
 	 *
 	 * @since 4.1.0
diff --git a/wp-admin/menu-header.php b/wp-admin/menu-header.php
index c86e907f45..fee5d3dbe0 100644
--- a/wp-admin/menu-header.php
+++ b/wp-admin/menu-header.php
@@ -139,7 +139,7 @@ function _wp_menu_output( $menu, $submenu, $submenu_as_parent = true ) {
 
 		$title = wptexturize( $item[0] );
 
-		// hide separators from screen readers
+		// Hide separators from screen readers.
 		if ( $is_separator ) {
 			$aria_hidden = ' aria-hidden="true"';
 		}
diff --git a/wp-admin/plugin-editor.php b/wp-admin/plugin-editor.php
index ccdd832e86..7b374bc038 100644
--- a/wp-admin/plugin-editor.php
+++ b/wp-admin/plugin-editor.php
@@ -316,6 +316,6 @@ if ( ! in_array( 'plugin_editor_notice', $dismissed_pointers, true ) ) :
 	</div>
 </div>
 	<?php
-endif; // editor warning notice
+endif; // Editor warning notice.
 
 include( ABSPATH . 'wp-admin/admin-footer.php' );
diff --git a/wp-includes/version.php b/wp-includes/version.php
index db2f68d2b5..00a2700282 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.1-alpha-44330';
+$wp_version = '5.1-alpha-44331';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.