diff --git a/src/wp-includes/load.php b/src/wp-includes/load.php
index 669cf65d0b..68ed0bd1ee 100644
--- a/src/wp-includes/load.php
+++ b/src/wp-includes/load.php
@@ -472,6 +472,8 @@ function wp_using_ext_object_cache( $using = null ) {
  * @access private
  */
 function wp_start_object_cache() {
+	global $wp_filter;
+
 	$first_init = false;
  	if ( ! function_exists( 'wp_cache_init' ) ) {
 		if ( file_exists( WP_CONTENT_DIR . '/object-cache.php' ) ) {
@@ -479,6 +481,11 @@ function wp_start_object_cache() {
 			if ( function_exists( 'wp_cache_init' ) ) {
 				wp_using_ext_object_cache( true );
 			}
+
+			// Re-initialize any hooks added manually by object-cache.php
+			if ( $wp_filter ) {
+				$wp_filter = WP_Hook::build_preinitialized_hooks( $wp_filter );
+			}
 		}
 
 		$first_init = true;