diff --git a/wp-includes/ms-blogs.php b/wp-includes/ms-blogs.php
index d291f169db..83fec396ab 100644
--- a/wp-includes/ms-blogs.php
+++ b/wp-includes/ms-blogs.php
@@ -298,8 +298,7 @@ function update_blog_details( $blog_id, $details = array() ) {
 	$fields = array( 'site_id', 'domain', 'path', 'registered', 'last_updated', 'public', 'archived', 'mature', 'spam', 'deleted', 'lang_id');
 	foreach ( array_intersect( array_keys( $details ), $fields ) as $field ) {
 		if ( 'path' === $field ) {
-			$details[ $field ] = array_filter( explode( '/', $details[ $field ] ) );
-			$details[ $field ] = trailingslashit( '/' . implode( '/', $details[ $field ] ) );
+			$details[ $field ] = trailingslashit( '/' . trim( $details[ $field ], '/' ) );
 		}
 
 		$update_details[ $field ] = $details[ $field ];
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 38ff5807c6..b70e28b7ba 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.2-alpha-31157';
+$wp_version = '4.2-alpha-31158';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.