diff --git a/src/corelib/serialization/qjsonvalue.cpp b/src/corelib/serialization/qjsonvalue.cpp
index 4e56cfb1433..52be7712fdc 100644
--- a/src/corelib/serialization/qjsonvalue.cpp
+++ b/src/corelib/serialization/qjsonvalue.cpp
@@ -1075,7 +1075,6 @@ QJsonValue QJsonValueConstRef::concrete(QJsonValueConstRef self) noexcept
 
 QString QJsonValueConstRef::objectKey(QJsonValueConstRef self)
 {
-    Q_ASSERT(self.is_object);
     Q_ASSERT(self.is_object);
     const QCborContainerPrivate *d = QJsonPrivate::Value::container(self);
     qsizetype index = QJsonPrivate::Value::indexHelper(self);