diff --git a/src/corelib/json/qjsonvalue.h b/src/corelib/json/qjsonvalue.h
index fe028990c0..97e20b574d 100644
--- a/src/corelib/json/qjsonvalue.h
+++ b/src/corelib/json/qjsonvalue.h
@@ -170,6 +170,12 @@ public:
     QJsonArray toArray() const;
     QJsonObject toObject() const;
 
+    // ### Qt 6: Add default values
+    inline bool toBool(bool defaultValue) const { return toValue().toBool(defaultValue); }
+    inline int toInt(int defaultValue) const { return toValue().toInt(defaultValue); }
+    inline double toDouble(double defaultValue) const { return toValue().toDouble(defaultValue); }
+    inline QString toString(const QString &defaultValue) const { return toValue().toString(defaultValue); }
+
     inline bool operator==(const QJsonValue &other) const { return toValue() == other; }
     inline bool operator!=(const QJsonValue &other) const { return toValue() != other; }
 
diff --git a/tests/auto/corelib/json/tst_qtjson.cpp b/tests/auto/corelib/json/tst_qtjson.cpp
index a17fe7561a..8d8a3d7e0e 100644
--- a/tests/auto/corelib/json/tst_qtjson.cpp
+++ b/tests/auto/corelib/json/tst_qtjson.cpp
@@ -132,6 +132,7 @@ private Q_SLOTS:
 
     void testTrailingComma();
     void testDetachBug();
+    void testJsonValueRefDefault();
 
     void valueEquals();
 
@@ -2425,5 +2426,22 @@ void tst_QtJson::longStrings()
     }
 }
 
+void tst_QtJson::testJsonValueRefDefault()
+{
+    QJsonObject empty;
+
+    QCOMPARE(empty["n/a"].toString(), QString());
+    QCOMPARE(empty["n/a"].toString("default"), QStringLiteral("default"));
+
+    QCOMPARE(empty["n/a"].toBool(), false);
+    QCOMPARE(empty["n/a"].toBool(true), true);
+
+    QCOMPARE(empty["n/a"].toInt(), 0);
+    QCOMPARE(empty["n/a"].toInt(42), 42);
+
+    QCOMPARE(empty["n/a"].toDouble(), 0.0);
+    QCOMPARE(empty["n/a"].toDouble(42.0), 42.0);
+}
+
 QTEST_MAIN(tst_QtJson)
 #include "tst_qtjson.moc"