Index: src/wp-includes/ms-blogs.php
===================================================================
--- src/wp-includes/ms-blogs.php	(revision 29664)
+++ src/wp-includes/ms-blogs.php	(working copy)
@@ -267,13 +267,9 @@
  * Refresh blog details when an option is updated.
  *
  * @access private
- * @param string $option_name
  */
-function _wp_refresh_blog_details_on_updated_option( $option_name ) {
-	$options = array( 'blogname', 'siteurl', 'post_count' );
-	if ( in_array( $option_name, $options ) ) {
-		refresh_blog_details( get_current_blog_id() );
-	}
+function _wp_refresh_blog_details_on_updated_option() {
+	refresh_blog_details( get_current_blog_id() );
 }
 
 /**
Index: src/wp-includes/ms-default-filters.php
===================================================================
--- src/wp-includes/ms-default-filters.php	(revision 29664)
+++ src/wp-includes/ms-default-filters.php	(working copy)
@@ -71,7 +71,9 @@
 remove_filter( 'option_home',    '_config_wp_home'    );
 
 // Some options changes should trigger blog details refresh.
-add_action( 'updated_option', '_wp_refresh_blog_details_on_updated_option' );
+add_action( 'update_option_blogname', '_wp_refresh_blog_details_on_updated_option' );
+add_action( 'update_option_siteurl', '_wp_refresh_blog_details_on_updated_option' );
+add_action( 'update_option_post_count', '_wp_refresh_blog_details_on_updated_option' );
 
 // If the network upgrade hasn't run yet, assume ms-files.php rewriting is used.
 add_filter( 'default_site_option_ms_files_rewriting', '__return_true' );