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diff --git a/chart2/source/inc/LinearRegressionCurveCalculator.hxx b/chart2/source/inc/LinearRegressionCurveCalculator.hxx
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+++ b/chart2/source/inc/LinearRegressionCurveCalculator.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+#pragma once
+
+#include "PolynomialRegressionCurveCalculator.hxx"
+
+namespace chart
+{
+
+class LinearRegressionCurveCalculator final : public PolynomialRegressionCurveCalculator
+{
+public:
+    LinearRegressionCurveCalculator();
+    virtual ~LinearRegressionCurveCalculator() override;
+
+private:
+    virtual void SAL_CALL setRegressionProperties(
+        sal_Int32 aDegree,
+        sal_Bool  aForceIntercept,
+        double    aInterceptValue,
+        sal_Int32 aPeriod,
+        sal_Int32 nMovingType) override;
+
+    virtual css::uno::Sequence<css::geometry::RealPoint2D> SAL_CALL getCurveValues(
+        double min,
+        double max,
+        sal_Int32 nPointCount,
+        const css::uno::Reference<css::chart2::XScaling>& xScalingX,
+        const css::uno::Reference<css::chart2::XScaling>& xScalingY,
+        sal_Bool bMaySkipPointsInCalculation ) override;
+};
+
+} //  namespace chart
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */