diff --git a/opm/material/constraintsolvers/PTFlash.hpp b/opm/material/constraintsolvers/PTFlash.hpp
index d19901257..4495e66ac 100644
--- a/opm/material/constraintsolvers/PTFlash.hpp
+++ b/opm/material/constraintsolvers/PTFlash.hpp
@@ -1,6 +1,8 @@
 // -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 // vi: set et ts=4 sw=4 sts=4:
 /*
+  Copyright 2022 NORCE.
+
   This file is part of the Open Porous Media project (OPM).
 
   OPM is free software: you can redistribute it and/or modify
diff --git a/opm/material/fluidsystems/PTFlashParameterCache.hpp b/opm/material/fluidsystems/PTFlashParameterCache.hpp
index 026d6ad99..12dcbdf6b 100644
--- a/opm/material/fluidsystems/PTFlashParameterCache.hpp
+++ b/opm/material/fluidsystems/PTFlashParameterCache.hpp
@@ -1,6 +1,8 @@
 // -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 // vi: set et ts=4 sw=4 sts=4:
 /*
+  Copyright 2022 NORCE.
+  
   This file is part of the Open Porous Media project (OPM).
 
   OPM is free software: you can redistribute it and/or modify
diff --git a/opm/material/viscositymodels/LBC.hpp b/opm/material/viscositymodels/LBC.hpp
index 7fe28ef8a..a5daa3ffd 100644
--- a/opm/material/viscositymodels/LBC.hpp
+++ b/opm/material/viscositymodels/LBC.hpp
@@ -1,6 +1,8 @@
 // -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 // vi: set et ts=4 sw=4 sts=4:
 /*
+  Copyright 2022 NORCE.
+  
   This file is part of the Open Porous Media project (OPM).
 
   OPM is free software: you can redistribute it and/or modify
diff --git a/opm/material/viscositymodels/LBCmodified.hpp b/opm/material/viscositymodels/LBCmodified.hpp
index e008dae4c..495977238 100644
--- a/opm/material/viscositymodels/LBCmodified.hpp
+++ b/opm/material/viscositymodels/LBCmodified.hpp
@@ -1,6 +1,8 @@
 // -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 // vi: set et ts=4 sw=4 sts=4:
 /*
+  Copyright 2022 NORCE.
+
   This file is part of the Open Porous Media project (OPM).
 
   OPM is free software: you can redistribute it and/or modify
diff --git a/tests/test_co2brine_ptflash.cpp b/tests/test_co2brine_ptflash.cpp
index 92da257bd..9c42c1367 100644
--- a/tests/test_co2brine_ptflash.cpp
+++ b/tests/test_co2brine_ptflash.cpp
@@ -1,6 +1,8 @@
 // -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 // vi: set et ts=4 sw=4 sts=4:
 /*
+  Copyright 2022 NORCE.
+  
   This file is part of the Open Porous Media project (OPM).
 
   OPM is free software: you can redistribute it and/or modify