diff --git a/JavaScriptCore/kjs/ErrorConstructor.cpp b/JavaScriptCore/kjs/ErrorConstructor.cpp
new file mode 100644
index 0000000..e58caaa
--- /dev/null
+++ b/JavaScriptCore/kjs/ErrorConstructor.cpp
@@ -0,0 +1,73 @@
+/*
+ *  Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
+ *  Copyright (C) 2003, 2008 Apple Inc. All rights reserved.
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include "config.h"
+#include "ErrorConstructor.h"
+
+#include "ErrorInstance.h"
+#include "ErrorPrototype.h"
+#include "FunctionPrototype.h"
+#include "JSGlobalObject.h"
+#include "JSString.h"
+
+namespace KJS {
+
+ErrorConstructor::ErrorConstructor(ExecState* exec, FunctionPrototype* funcProto, ErrorPrototype* errorProto)
+    : InternalFunction(funcProto, Identifier(exec, errorProto->classInfo()->className))
+{
+    // ECMA 15.11.3.1 Error.prototype
+    putDirect(exec->propertyNames().prototype, errorProto, DontEnum|DontDelete|ReadOnly);
+    putDirect(exec->propertyNames().length, jsNumber(exec, 1), DontDelete|ReadOnly|DontEnum);
+}
+
+// ECMA 15.9.3
+static ErrorInstance* constructError(ExecState* exec, const ArgList& args)
+{
+    ErrorInstance* obj = new (exec) ErrorInstance(exec->lexicalGlobalObject()->errorPrototype());
+    if (!args[0]->isUndefined())
+        obj->putDirect(exec->propertyNames().message, jsString(exec, args[0]->toString(exec)));
+    return obj;
+}
+
+static JSObject* constructWithErrorConstructor(ExecState* exec, JSObject*, const ArgList& args)
+{
+    return constructError(exec, args);
+}
+
+ConstructType ErrorConstructor::getConstructData(ConstructData& constructData)
+{
+    constructData.native.function = constructWithErrorConstructor;
+    return ConstructTypeNative;
+}
+
+// ECMA 15.9.2
+static JSValue* callErrorConstructor(ExecState* exec, JSObject*, JSValue*, const ArgList& args)
+{
+    // "Error()" gives the sames result as "new Error()"
+    return constructError(exec, args);
+}
+
+CallType ErrorConstructor::getCallData(CallData& callData)
+{
+    callData.native.function = callErrorConstructor;
+    return CallTypeNative;
+}
+
+} // namespace KJS