diff --git a/wp-admin/includes/class-wp-upgrader.php b/wp-admin/includes/class-wp-upgrader.php
index ecff57fe5a..2f36bfece1 100644
--- a/wp-admin/includes/class-wp-upgrader.php
+++ b/wp-admin/includes/class-wp-upgrader.php
@@ -1069,11 +1069,11 @@ class Bulk_Upgrader_Skin extends WP_Upgrader_Skin {
 	}
 
 	function add_strings() {
-		$this->upgrader->strings['bulk_upgrade_start'] = __('The update process is starting. This process may take awhile on some hosts, so please be patient.');
+		$this->upgrader->strings['skin_upgrade_start'] = __('The update process is starting. This process may take awhile on some hosts, so please be patient.');
 		$this->upgrader->strings['skin_update_failed_error'] = __('An error occured while updating %1$s: <strong>%2$s</strong>.');
 		$this->upgrader->strings['skin_update_failed'] = __('The update of %1$s failed.');
 		$this->upgrader->strings['skin_update_successful'] = __('%1$s updated successfully.').' <a onclick="%2$s" href="#" class="hide-if-no-js"><span>'.__('Show Details').'</span><span class="hidden">'.__('Hide Details').'</span>.</a>';
-		$this->upgrader->strings['bulk_upgrade_end'] = __('All upgrades have been completed.');
+		$this->upgrader->strings['skin_upgrade_end'] = __('All updates have been completed.');
 	}
 
 	function feedback($string) {
@@ -1118,11 +1118,11 @@ class Bulk_Upgrader_Skin extends WP_Upgrader_Skin {
 	}
 
 	function bulk_header() {
-		$this->feedback('bulk_upgrade_start');
+		$this->feedback('skin_upgrade_start');
 	}
 
 	function bulk_footer() {
-		$this->feedback('bulk_upgrade_end');
+		$this->feedback('skin_upgrade_end');
 	}
 
 	function before($title = '') {