1 files changed, 4 insertions, 1 deletions
diff --git a/src/mongo/dbtests/extensions_callback_real_test.cpp b/src/mongo/dbtests/extensions_callback_real_test.cpp
index 9475d0e2779..a2d88117969 100644
--- a/src/mongo/dbtests/extensions_callback_real_test.cpp
+++ b/src/mongo/dbtests/extensions_callback_real_test.cpp
@@ -255,10 +255,13 @@ TEST_F(ExtensionsCallbackRealTest, WhereExpressionDesugarsToExprAndInternalJs) {
         auto expr1 = unittest::assertGet(
             ExtensionsCallbackReal(&_opCtx, &_nss).parseWhere(expCtx, query1.firstElement()));
 
+        BSONObjBuilder gotMatch;
+        expr1->serialize(&gotMatch);
+
         auto expectedMatch = fromjson(
             "{$expr: {$function: {'body': 'function() { return this.x == 10; }', 'args': "
             "['$$CURRENT'], 'lang': 'js', '_internalSetObjToThis': true}}}");
-        ASSERT_BSONOBJ_EQ(expr1->serialize(), expectedMatch);
+        ASSERT_BSONOBJ_EQ(gotMatch.obj(), expectedMatch);
     }
 }