diff --git a/wp-includes/link-template.php b/wp-includes/link-template.php
index 3db5c289c8..d872123e61 100644
--- a/wp-includes/link-template.php
+++ b/wp-includes/link-template.php
@@ -907,21 +907,22 @@ function edit_tag_link( $link = '', $before = '', $after = '', $tag = null ) {
  * Retrieve edit term url.
  *
  * @since 3.1.0
+ * @since 4.5.0 The `$taxonomy` argument was made optional.
  *
  * @param int    $term_id     Term ID.
- * @param string $taxonomy    Taxonomy.
- * @param string $object_type The object type. Used to highlight the proper post type menu on the linked page.
+ * @param string $taxonomy    Optional. Taxonomy. Defaults to the taxonomy of the term identified by `$term_id`.
+ * @param string $object_type Optional. The object type. Used to highlight the proper post type menu on the linked page.
  *                            Defaults to the first object_type associated with the taxonomy.
  * @return string|null The edit term link URL for the given term, or null on failure.
  */
-function get_edit_term_link( $term_id, $taxonomy, $object_type = '' ) {
-	$tax = get_taxonomy( $taxonomy );
-	if ( ! $tax || ! current_user_can( $tax->cap->edit_terms ) ) {
+function get_edit_term_link( $term_id, $taxonomy = '', $object_type = '' ) {
+	$term = get_term( $term_id, $taxonomy );
+	if ( ! $term || is_wp_error( $term ) ) {
 		return;
 	}
 
-	$term = get_term( $term_id, $taxonomy );
-	if ( ! $term || is_wp_error( $term ) ) {
+	$tax = get_taxonomy( $term->taxonomy );
+	if ( ! $tax || ! current_user_can( $tax->cap->edit_terms ) ) {
 		return;
 	}
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index d8dc638801..4b2a3672f2 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.5-alpha-36645';
+$wp_version = '4.5-alpha-36646';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.