diff --git a/wp-admin/includes/taxonomy.php b/wp-admin/includes/taxonomy.php
index 359cfafe2f..470d36d55f 100644
--- a/wp-admin/includes/taxonomy.php
+++ b/wp-admin/includes/taxonomy.php
@@ -48,19 +48,19 @@ function get_category_to_edit( $id ) {
  *
  * @since 2.0.0
  *
- * @param int|string $cat_name        Category name.
- * @param int        $category_parent Optional. ID of parent category.
- * @return int|WP_Error
+ * @param string $category_name   Category name.
+ * @param int    $category_parent Optional. ID of parent category.
+ * @return int The ID of category term on success, or zero on failure.
  */
-function wp_create_category( $cat_name, $category_parent = 0 ) {
-	$id = category_exists( $cat_name, $category_parent );
+function wp_create_category( $category_name, $category_parent = 0 ) {
+	$id = category_exists( $category_name, $category_parent );
 	if ( $id ) {
-		return $id;
+		return (int) $id;
 	}
 
 	return wp_insert_category(
 		array(
-			'cat_name'        => $cat_name,
+			'cat_name'        => $category_name,
 			'category_parent' => $category_parent,
 		)
 	);
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 1ae1d9a901..cc15b43048 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '7.0-alpha-61295';
+$wp_version = '7.0-alpha-61298';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.