diff --git a/Applications/Utils/ModelPreparation/convertVtkDataArrayToVtkDataArray.cpp b/Applications/Utils/ModelPreparation/convertVtkDataArrayToVtkDataArray.cpp
index 40aa9ba9a1425017edb94e614e4597c07ea75112..87652aa46acc5bd3f9243a4075d94eda34a3d051 100644
--- a/Applications/Utils/ModelPreparation/convertVtkDataArrayToVtkDataArray.cpp
+++ b/Applications/Utils/ModelPreparation/convertVtkDataArrayToVtkDataArray.cpp
@@ -1,7 +1,7 @@
 /**
  *
  * \copyright
- * Copyright (c) 2012-2016, OpenGeoSys Community (http://www.opengeosys.org)
+ * Copyright (c) 2012-2021, OpenGeoSys Community (http://www.opengeosys.org)
  *            Distributed under a Modified BSD License.
  *              See accompanying file LICENSE.txt or
  *              http://www.opengeosys.org/project/license
diff --git a/ProcessLib/ComponentTransport/CreateComponentTransportProcess.cpp b/ProcessLib/ComponentTransport/CreateComponentTransportProcess.cpp
index 7eeef019cd6240ec22abdb95602a2cfd762b3dec..6395445879c571bdc06a746bf8daca00f47c9f22 100644
--- a/ProcessLib/ComponentTransport/CreateComponentTransportProcess.cpp
+++ b/ProcessLib/ComponentTransport/CreateComponentTransportProcess.cpp
@@ -16,7 +16,6 @@
 #include "CreateLookupTable.h"
 #include "LookupTable.h"
 #include "MaterialLib/MPL/CreateMaterialSpatialDistributionMap.h"
-#include "MeshLib/IO/readMeshFromFile.h"
 #include "ParameterLib/Utils.h"
 #include "ProcessLib/Output/CreateSecondaryVariables.h"
 #include "ProcessLib/SurfaceFlux/SurfaceFluxData.h"
diff --git a/ProcessLib/Output/ProcessOutput.cpp b/ProcessLib/Output/ProcessOutput.cpp
index d34ed006228cec6ef273e71afd615a2bd64e9bfa..3abd7caf1c0da6ac3482e4d45170e6ef1d4357a0 100644
--- a/ProcessLib/Output/ProcessOutput.cpp
+++ b/ProcessLib/Output/ProcessOutput.cpp
@@ -18,7 +18,6 @@
 
 #include "InfoLib/GitInfo.h"
 #include "IntegrationPointWriter.h"
-#include "MathLib/LinAlg/LinAlg.h"
 #ifdef USE_PETSC
 #include "MeshLib/NodePartitionedMesh.h"
 #endif
diff --git a/ProcessLib/SurfaceFlux/SurfaceFluxLocalAssembler.h b/ProcessLib/SurfaceFlux/SurfaceFluxLocalAssembler.h
index 2347aaed24ab6f22f2ba8f942f3a0d2fcc62a088..bf3875c5a5c85d6089cb2de93267a541dd6ec519 100644
--- a/ProcessLib/SurfaceFlux/SurfaceFluxLocalAssembler.h
+++ b/ProcessLib/SurfaceFlux/SurfaceFluxLocalAssembler.h
@@ -16,8 +16,6 @@
 #include "NumLib/DOF/DOFTableUtil.h"
 #include "NumLib/Fem/InitShapeMatrices.h"
 #include "NumLib/Fem/ShapeMatrixPolicy.h"
-#include "ParameterLib/Parameter.h"
-#include "ProcessLib/Process.h"
 
 namespace ProcessLib
 {