diff --git a/NumLib/NamedFunctionProvider.h b/NumLib/NamedFunctionProvider.h
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index 0000000000000000000000000000000000000000..750b0109ce78d4bd69dfe733a0ce61b2783c333a
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+++ b/NumLib/NamedFunctionProvider.h
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+/**
+ * \copyright
+ * Copyright (c) 2012-2016, OpenGeoSys Community (http://www.opengeosys.org)
+ *            Distributed under a Modified BSD License.
+ *              See accompanying file LICENSE.txt or
+ *              http://www.opengeosys.org/project/license
+ *
+ */
+
+#ifndef NUMLIB_NAMEDFUNCTIONPROVIDER_H
+#define NUMLIB_NAMEDFUNCTIONPROVIDER_H
+
+#include "NamedFunction.h"
+
+namespace NumLib
+{
+
+//! Interface used for providing named functions.
+class NamedFunctionProvider
+{
+public:
+    virtual std::vector<NamedFunction> getNamedFunctions() const { return {}; }
+    virtual ~NamedFunctionProvider() = default;
+};
+
+} // namespace NumLib
+
+#endif // NUMLIB_NAMEDFUNCTIONPROVIDER_H