diff --git a/wp-includes/class-snoopy.php b/wp-includes/class-snoopy.php
index f4eb4700ef..da3d824eee 100644
--- a/wp-includes/class-snoopy.php
+++ b/wp-includes/class-snoopy.php
@@ -1,4 +1,10 @@
 <?php
+
+/**
+ * Deprecated. Use WP_HTTP (http.php, class-http.php) instead.
+ */
+_deprecated_file( basename( __FILE__ ), '3.0', WPINC . '/http.php' );
+
 if ( !class_exists( 'Snoopy' ) ) :
 /*************************************************