diff --git a/ext/session/tests/session_set_save_handler_class_005.phpt b/ext/session/tests/session_set_save_handler_class_005.phpt
index a996eb8d2609b..c74c81de1dbc8 100644
--- a/ext/session/tests/session_set_save_handler_class_005.phpt
+++ b/ext/session/tests/session_set_save_handler_class_005.phpt
@@ -3,6 +3,7 @@ Test session_set_save_handler() : incomplete implementation
 --INI--
 session.save_handler=files
 session.name=PHPSESSID
+session.gc_probability=0
 --SKIPIF--
 <?php include('skipif.inc'); ?>
 --FILE--
diff --git a/ext/session/tests/session_set_save_handler_class_012.phpt b/ext/session/tests/session_set_save_handler_class_012.phpt
index 706ef793ef728..3899d28816e19 100644
--- a/ext/session/tests/session_set_save_handler_class_012.phpt
+++ b/ext/session/tests/session_set_save_handler_class_012.phpt
@@ -3,6 +3,7 @@ Test session_set_save_handler() : incorrect arguments for existing handler open
 --INI--
 session.save_handler=files
 session.name=PHPSESSID
+session.gc_probability=0
 --SKIPIF--
 <?php include('skipif.inc'); ?>
 --FILE--