diff --git a/wp-includes/formatting.php b/wp-includes/formatting.php
index 6acb459c26..911fb905f1 100644
--- a/wp-includes/formatting.php
+++ b/wp-includes/formatting.php
@@ -2000,6 +2000,8 @@ function sanitize_title_with_dashes( $title, $raw_title = '', $context = 'displa
 		$title = str_replace( array( '%c2%a0', '%e2%80%93', '%e2%80%94' ), '-', $title );
 		// Convert nbsp, ndash and mdash HTML entities to hyphens
 		$title = str_replace( array( ' ', ' ', '–', '–', '—', '—' ), '-', $title );
+		// Convert forward slash to hyphen
+		$title = str_replace( '/', '-', $title );
 
 		// Strip these characters entirely
 		$title = str_replace( array(
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 8eb8d4cf4c..6af748bc77 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.9-alpha-41317';
+$wp_version = '4.9-alpha-41318';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.