diff --git a/src/Psalm/Internal/Codebase/Functions.php b/src/Psalm/Internal/Codebase/Functions.php
index ceb74b0df6c..420a93af211 100644
--- a/src/Psalm/Internal/Codebase/Functions.php
+++ b/src/Psalm/Internal/Codebase/Functions.php
@@ -482,7 +482,7 @@ public function isCallMapFunctionPure(
             'ignore_user_abort',
 
             // ftp
-            'ftp_close',
+            'ftp_close', 'ftp_pasv',
 
             // bcmath
             'bcscale',