diff --git a/src/wp-includes/option.php b/src/wp-includes/option.php
index d58ae6983f..8bc8edc932 100644
--- a/src/wp-includes/option.php
+++ b/src/wp-includes/option.php
@@ -1641,7 +1641,7 @@ function get_site_transient( $transient ) {
  * @see set_transient()
  *
  * @param string $transient  Transient name. Expected to not be SQL-escaped. Must be
- *                           40 characters or fewer in length.
+ *                           167 characters or fewer in length.
  * @param mixed  $value      Transient value. Expected to not be SQL-escaped.
  * @param int    $expiration Optional. Time until expiration in seconds. Default 0 (no expiration).
  * @return bool False if value was not set and true if value was set.