1 files changed, 4 insertions, 3 deletions
diff --git a/Csrf/CsrfTokenManagerInterface.php b/Csrf/CsrfTokenManagerInterface.php
index 878237b..2b9254b 100644
--- a/Csrf/CsrfTokenManagerInterface.php
+++ b/Csrf/CsrfTokenManagerInterface.php
@@ -23,7 +23,8 @@ interface CsrfTokenManagerInterface
      * Returns a CSRF token for the given ID.
      *
      * If previously no token existed for the given ID, a new token is
-     * generated. Otherwise the existing token is returned.
+     * generated. Otherwise the existing token is returned (with the same value,
+     * not the same instance).
      *
      * @param string $tokenId The token ID. You may choose an arbitrary value
      *                        for the ID
@@ -51,8 +52,8 @@ interface CsrfTokenManagerInterface
      *
      * @param string $tokenId The token ID
      *
-     * @return Boolean Returns true if a token existed for this ID, false
-     *                 otherwise
+     * @return string|null Returns the removed token value if one existed, NULL
+     *                     otherwise
      */
     public function removeToken($tokenId);