diff --git a/test/stdlib/ObjectSpace_test.rb b/test/stdlib/ObjectSpace_test.rb
index 5903e03d9..3ae6be4c0 100644
--- a/test/stdlib/ObjectSpace_test.rb
+++ b/test/stdlib/ObjectSpace_test.rb
@@ -212,11 +212,15 @@ def test_trace_object_allocations_clear
   def test_trace_object_allocations_debug_start
     assert_send_type "() -> void",
       ObjectSpace, :trace_object_allocations_debug_start
+  ensure
+    ObjectSpace.trace_object_allocations_stop
   end
 
   def test_trace_object_allocations_start
     assert_send_type "() -> void",
       ObjectSpace, :trace_object_allocations_start
+  ensure
+    ObjectSpace.trace_object_allocations_stop
   end
 
   def test_trace_object_allocations_stop