diff --git a/utilities/document/json_document_test.cc b/utilities/document/json_document_test.cc
index 70714c5c2f95b4003a44b1e5ab3e76ec481de27e..55d550b3559e7b9387f35054339dadb346c12a3c 100644
--- a/utilities/document/json_document_test.cc
+++ b/utilities/document/json_document_test.cc
@@ -132,6 +132,7 @@ TEST(JSONDocumentTest, Serialization) {
   auto deserialized_json = JSONDocument::Deserialize(Slice(serialized));
   ASSERT_TRUE(deserialized_json != nullptr);
   AssertSampleJSON(*deserialized_json);
+  delete deserialized_json;
 
   // deserialization failure
   ASSERT_TRUE(JSONDocument::Deserialize(