diff --git a/test/net/http/test_https.rb b/test/net/http/test_https.rb
index 64101b6bda..660104d048 100644
--- a/test/net/http/test_https.rb
+++ b/test/net/http/test_https.rb
@@ -212,6 +212,8 @@ class TestNetHTTPS < Test::Unit::TestCase
       http.cert_store = TEST_STORE
       http.verify_hostname = false
       assert_nothing_raised { http.start }
+    ensure
+      http&.finish
     end
   end