diff --git a/src/corelib/serialization/qjsonvalue.cpp b/src/corelib/serialization/qjsonvalue.cpp
index adc58cc2536..7138b32d039 100644
--- a/src/corelib/serialization/qjsonvalue.cpp
+++ b/src/corelib/serialization/qjsonvalue.cpp
@@ -1017,7 +1017,6 @@ 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);