5 files changed, 5 insertions, 4 deletions
diff --git a/src/qml/jsruntime/qv4booleanobject.cpp b/src/qml/jsruntime/qv4booleanobject.cpp
index eb83f902db..80b95a71d4 100644
--- a/src/qml/jsruntime/qv4booleanobject.cpp
+++ b/src/qml/jsruntime/qv4booleanobject.cpp
@@ -66,7 +66,7 @@ void BooleanPrototype::init(ExecutionEngine *engine, Object *ctor)
 {
     Scope scope(engine);
     ScopedObject o(scope);
-    ctor->defineReadonlyProperty(engine->id_length(), Primitive::fromInt32(1));
+    ctor->defineReadonlyConfigurableProperty(engine->id_length(), Primitive::fromInt32(1));
     ctor->defineReadonlyProperty(engine->id_prototype(), (o = this));
     defineDefaultProperty(QStringLiteral("constructor"), (o = ctor));
     defineDefaultProperty(engine->id_toString(), method_toString);
diff --git a/src/qml/jsruntime/qv4globalobject.cpp b/src/qml/jsruntime/qv4globalobject.cpp
index 47a6734eda..95f65c47c0 100644
--- a/src/qml/jsruntime/qv4globalobject.cpp
+++ b/src/qml/jsruntime/qv4globalobject.cpp
@@ -335,7 +335,7 @@ void Heap::EvalFunction::init(QV4::ExecutionContext *scope)
     Scope s(scope);
     Heap::FunctionObject::init(scope, s.engine->id_eval());
     ScopedFunctionObject f(s, this);
-    f->defineReadonlyProperty(s.engine->id_length(), Primitive::fromInt32(1));
+    f->defineReadonlyConfigurableProperty(s.engine->id_length(), Primitive::fromInt32(1));
 }
 
 ReturnedValue EvalFunction::evalCall(const Value *, const Value *argv, int argc, bool directCall) const
diff --git a/src/qml/jsruntime/qv4numberobject.cpp b/src/qml/jsruntime/qv4numberobject.cpp
index f58ff45801..de24ec8181 100644
--- a/src/qml/jsruntime/qv4numberobject.cpp
+++ b/src/qml/jsruntime/qv4numberobject.cpp
@@ -95,7 +95,7 @@ void NumberPrototype::init(ExecutionEngine *engine, Object *ctor)
     Scope scope(engine);
     ScopedObject o(scope);
     ctor->defineReadonlyProperty(engine->id_prototype(), (o = this));
-    ctor->defineReadonlyProperty(engine->id_length(), Primitive::fromInt32(1));
+    ctor->defineReadonlyConfigurableProperty(engine->id_length(), Primitive::fromInt32(1));
 
     ctor->defineReadonlyProperty(QStringLiteral("NaN"), Primitive::fromDouble(qt_qnan()));
     ctor->defineReadonlyProperty(QStringLiteral("NEGATIVE_INFINITY"), Primitive::fromDouble(-qInf()));
diff --git a/src/qml/jsruntime/qv4proxy.cpp b/src/qml/jsruntime/qv4proxy.cpp
index 7bde34f880..310e6b4dac 100644
--- a/src/qml/jsruntime/qv4proxy.cpp
+++ b/src/qml/jsruntime/qv4proxy.cpp
@@ -318,6 +318,7 @@ void Heap::Proxy::init(QV4::ExecutionContext *ctx)
     Scope scope(ctx);
     Scoped<QV4::Proxy> ctor(scope, this);
     ctor->defineDefaultProperty(QStringLiteral("revocable"), QV4::Proxy::method_revocable, 2);
+    ctor->defineReadonlyConfigurableProperty(scope.engine->id_length(), Primitive::fromInt32(2));
 }
 
 ReturnedValue Proxy::callAsConstructor(const FunctionObject *f, const Value *argv, int argc)
diff --git a/src/qml/jsruntime/qv4stringobject.cpp b/src/qml/jsruntime/qv4stringobject.cpp
index d35012d11e..b1ae5a1ce5 100644
--- a/src/qml/jsruntime/qv4stringobject.cpp
+++ b/src/qml/jsruntime/qv4stringobject.cpp
@@ -219,7 +219,7 @@ void StringPrototype::init(ExecutionEngine *engine, Object *ctor)
     setProperty(scope.engine, Heap::StringObject::LengthPropertyIndex, Primitive::fromInt32(0));
 
     ctor->defineReadonlyProperty(engine->id_prototype(), (o = this));
-    ctor->defineReadonlyProperty(engine->id_length(), Primitive::fromInt32(1));
+    ctor->defineReadonlyConfigurableProperty(engine->id_length(), Primitive::fromInt32(1));
     ctor->defineDefaultProperty(QStringLiteral("fromCharCode"), StringCtor::method_fromCharCode, 1);
     ctor->defineDefaultProperty(QStringLiteral("fromCodePoint"), StringCtor::method_fromCodePoint, 1);