diff --git a/core/lib/Drupal/Core/Database/Schema.php b/core/lib/Drupal/Core/Database/Schema.php
index 705fb54a05..8baa83c0d3 100644
--- a/core/lib/Drupal/Core/Database/Schema.php
+++ b/core/lib/Drupal/Core/Database/Schema.php
@@ -411,7 +411,7 @@ public function fieldExists($table, $column) {
   /**
    * Finds the primary key columns of a table, from the database.
    *
-   * @param $table
+   * @param string $table
    *   The name of the table.
    *
    * @return string[]|false