Index: src/wp-includes/user.php
===================================================================
--- src/wp-includes/user.php	(revision 43174)
+++ src/wp-includes/user.php	(working copy)
@@ -3141,8 +3141,8 @@
 	$content = str_replace( '###SITENAME###', wp_specialchars_decode( $email_data['sitename'], ENT_QUOTES ), $content );
 	$content = str_replace( '###SITEURL###', esc_url_raw( $email_data['siteurl'] ), $content );
 
-	/* translators: %s Site name. */
-	return wp_mail( $email_data['email'], sprintf( __( '[%s] Confirm Action' ), wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES ) ), $content );
+	/* translators: 1 Site name 2: Request type */
+	return wp_mail( $email_data['email'], sprintf( __( '[%1$s] Confirm Action: %2$s' ), wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES ), $email_data['description'] ), $content );
 }
 
 /**