diff --git a/phpBB/docs/CHANGELOG.html b/phpBB/docs/CHANGELOG.html
index fabf2dad4f..5e6a0dbd86 100644
--- a/phpBB/docs/CHANGELOG.html
+++ b/phpBB/docs/CHANGELOG.html
@@ -101,6 +101,7 @@
 		<li>[Fix] Minor language fixes. (Bug #54855)</li>
 		<li>[Fix] Parsing urls in signatures properly uses config settings. (Bug #57105)</li>
 		<li>[Fix] Allow multibyte keys in request_var(). (Bug #51555)</li>
+		<li>[Fix] Fix inclusion check for captcha garbage collection (Bug #59425)</li>
 		<li>[Fix] Prevent wrong tar archive type detection. (Bug #12531)</li>
 		<li>[Fix] Correct redirection after login to forum not in web root (Bug #58755)</li>
 		<li>[Fix] Allow setting parent forums regardless of permission settings. (Bug #57415)</li>
diff --git a/phpBB/includes/session.php b/phpBB/includes/session.php
index 8beb0161f9..0a01b4e73b 100644
--- a/phpBB/includes/session.php
+++ b/phpBB/includes/session.php
@@ -983,7 +983,7 @@ class session
 			}
 
 			// only called from CRON; should be a safe workaround until the infrastructure gets going
-			if (!class_exists('captcha_factory'))
+			if (!class_exists('phpbb_captcha_factory'))
 			{
 				include($phpbb_root_path . "includes/captcha/captcha_factory." . $phpEx);
 			}