diff --git a/UPGRADING b/UPGRADING
index b753545a944c..0edfda3c511b 100644
--- a/UPGRADING
+++ b/UPGRADING
@@ -676,8 +676,8 @@ PHP 8.4 UPGRADE NOTES
   . getAttribute, enabled to get the value of ATTR_STRINGIFY_FETCHES.
 
 - PDO_FIREBIRD:
-  . getAttribute, enabled to get values of FB_ATTR_DATE_FORMAT, FB_ATTR_TIME_FORMAT,
-    FB_ATTR_TIMESTAMP_FORMAT.
+  . Added new attributes to get values of Pdo\Firebird::ATTR_DATE_FORMAT, Pdo\Firebird::ATTR_TIME_FORMAT,
+    Pdo\Firebird::ATTR_TIMESTAMP_FORMAT.
   . Added new attributes to specify transaction isolation level and access mode.
     Along with these, five constants (Pdo\Firebird::TRANSACTION_ISOLATION_LEVEL,
     Pdo\Firebird::READ_COMMITTED, Pdo\Firebird::REPEATABLE_READ,
diff --git a/ext/pdo_firebird/pdo_firebird.c b/ext/pdo_firebird/pdo_firebird.c
index 0fbdb7f8c97c..2ad5b4f710ad 100644
--- a/ext/pdo_firebird/pdo_firebird.c
+++ b/ext/pdo_firebird/pdo_firebird.c
@@ -57,10 +57,6 @@ ZEND_GET_MODULE(pdo_firebird)
 
 PHP_MINIT_FUNCTION(pdo_firebird) /* {{{ */
 {
-	REGISTER_PDO_CLASS_CONST_LONG("FB_ATTR_DATE_FORMAT", (zend_long) PDO_FB_ATTR_DATE_FORMAT);
-	REGISTER_PDO_CLASS_CONST_LONG("FB_ATTR_TIME_FORMAT", (zend_long) PDO_FB_ATTR_TIME_FORMAT);
-	REGISTER_PDO_CLASS_CONST_LONG("FB_ATTR_TIMESTAMP_FORMAT", (zend_long) PDO_FB_ATTR_TIMESTAMP_FORMAT);
-
 	if (FAILURE == php_pdo_register_driver(&pdo_firebird_driver)) {
 		return FAILURE;
 	}