diff --git a/ProcessLib/HydroMechanics/CreateHydroMechanicsProcess.cpp b/ProcessLib/HydroMechanics/CreateHydroMechanicsProcess.cpp
index 58b3ccd1dd171c6856e0a30518bccad445c16cf8..a4bede7634e26cdbdb8b6fe7d4dad821de08d341 100644
--- a/ProcessLib/HydroMechanics/CreateHydroMechanicsProcess.cpp
+++ b/ProcessLib/HydroMechanics/CreateHydroMechanicsProcess.cpp
@@ -55,8 +55,7 @@ std::unique_ptr<Process> createHydroMechanicsProcess(
     DBUG("Associate displacement with process variable \'%s\'.",
          process_variables[1].get().getName().c_str());
 
-    if (process_variables[1].get().getNumberOfComponents() !=
-        DisplacementDim)
+    if (process_variables[1].get().getNumberOfComponents() != DisplacementDim)
     {
         OGS_FATAL(
             "Number of components of the process variable '%s' is different "
@@ -77,7 +76,6 @@ std::unique_ptr<Process> createHydroMechanicsProcess(
             process_variables[0].get().getNumberOfComponents());
     }
 
-
     // Constitutive relation.
     // read type;
     auto const constitutive_relation_config =
@@ -107,8 +105,7 @@ std::unique_ptr<Process> createHydroMechanicsProcess(
     auto& intrinsic_permeability = findParameter<double>(
         config,
         //! \ogs_file_param_special{prj__processes__process__HYDRO_MECHANICS__intrinsic_permeability}
-        "intrinsic_permeability",
-        parameters, 1);
+        "intrinsic_permeability", parameters, 1);
 
     DBUG("Use \'%s\' as intrinsic conductivity parameter.",
          intrinsic_permeability.name.c_str());
@@ -126,8 +123,7 @@ std::unique_ptr<Process> createHydroMechanicsProcess(
     auto& fluid_viscosity = findParameter<double>(
         config,
         //! \ogs_file_param_special{prj__processes__process__HYDRO_MECHANICS__fluid_viscosity}
-        "fluid_viscosity",
-        parameters, 1);
+        "fluid_viscosity", parameters, 1);
     DBUG("Use \'%s\' as fluid viscosity parameter.",
          fluid_viscosity.name.c_str());
 
@@ -135,17 +131,14 @@ std::unique_ptr<Process> createHydroMechanicsProcess(
     auto& fluid_density = findParameter<double>(
         config,
         //! \ogs_file_param_special{prj__processes__process__HYDRO_MECHANICS__fluid_density}
-        "fluid_density",
-        parameters, 1);
-    DBUG("Use \'%s\' as fluid density parameter.",
-         fluid_density.name.c_str());
+        "fluid_density", parameters, 1);
+    DBUG("Use \'%s\' as fluid density parameter.", fluid_density.name.c_str());
 
     // Biot coefficient
     auto& biot_coefficient = findParameter<double>(
         config,
         //! \ogs_file_param_special{prj__processes__process__HYDRO_MECHANICS__biot_coefficient}
-        "biot_coefficient",
-        parameters, 1);
+        "biot_coefficient", parameters, 1);
     DBUG("Use \'%s\' as Biot coefficient parameter.",
          biot_coefficient.name.c_str());
 
@@ -153,19 +146,15 @@ std::unique_ptr<Process> createHydroMechanicsProcess(
     auto& porosity = findParameter<double>(
         config,
         //! \ogs_file_param_special{prj__processes__process__HYDRO_MECHANICS__porosity}
-        "porosity",
-        parameters, 1);
-    DBUG("Use \'%s\' as porosity parameter.",
-         porosity.name.c_str());
+        "porosity", parameters, 1);
+    DBUG("Use \'%s\' as porosity parameter.", porosity.name.c_str());
 
     // Solid density
     auto& solid_density = findParameter<double>(
         config,
         //! \ogs_file_param_special{prj__processes__process__HYDRO_MECHANICS__solid_density}
-        "solid_density",
-        parameters, 1);
-    DBUG("Use \'%s\' as solid density parameter.",
-         solid_density.name.c_str());
+        "solid_density", parameters, 1);
+    DBUG("Use \'%s\' as solid density parameter.", solid_density.name.c_str());
 
     // Specific body force
     Eigen::Matrix<double, DisplacementDim, 1> specific_body_force;
diff --git a/ProcessLib/HydroMechanics/CreateLocalAssemblers.h b/ProcessLib/HydroMechanics/CreateLocalAssemblers.h
index 305e574426937de343d87067dae3393120309eeb..3201b94494c067948a253cce9485d1517eca9e0a 100644
--- a/ProcessLib/HydroMechanics/CreateLocalAssemblers.h
+++ b/ProcessLib/HydroMechanics/CreateLocalAssemblers.h
@@ -64,8 +64,9 @@ void createLocalAssemblers(
  * The first two template parameters cannot be deduced from the arguments.
  * Therefore they always have to be provided manually.
  */
-template <int DisplacementDim, template <typename, typename, typename, unsigned, int>
-                               class LocalAssemblerImplementation,
+template <int DisplacementDim,
+          template <typename, typename, typename, unsigned, int>
+          class LocalAssemblerImplementation,
           typename LocalAssemblerInterface, typename... ExtraCtorArgs>
 void createLocalAssemblers(
     const unsigned dimension,
diff --git a/ProcessLib/HydroMechanics/HydroMechanicsFEM.h b/ProcessLib/HydroMechanics/HydroMechanicsFEM.h
index 0cb5c7bcb033b84fdd248bc1f17ead10369d8bd6..d49106882831eef9a65d19d5c94e80c0f6caefe5 100644
--- a/ProcessLib/HydroMechanics/HydroMechanicsFEM.h
+++ b/ProcessLib/HydroMechanics/HydroMechanicsFEM.h
@@ -61,7 +61,7 @@ struct IntegrationPointData final
     typename ShapeMatrixTypeDisplacement::template MatrixType<
         DisplacementDim, NPoints * DisplacementDim>
         N_u;
-    //typename ShapeMatrixTypeDisplacement::NodalRowVectorType N_u;
+    // typename ShapeMatrixTypeDisplacement::NodalRowVectorType N_u;
     typename BMatricesType::BMatrixType b_matrices;
     typename BMatricesType::KelvinVectorType sigma_eff, sigma_eff_prev;
     typename BMatricesType::KelvinVectorType eps, eps_prev;
@@ -207,8 +207,8 @@ public:
             auto& ip_data = _ip_data[ip];
             auto const& sm = shape_matrices_u[ip];
             _ip_data[ip].integration_weight =
-                _integration_method.getWeightedPoint(ip).getWeight() * sm.integralMeasure *
-                shape_matrices_u[ip].detJ;
+                _integration_method.getWeightedPoint(ip).getWeight() *
+                sm.integralMeasure * shape_matrices_u[ip].detJ;
             ip_data.b_matrices.resize(
                 kelvin_vector_size,
                 ShapeFunctionDisplacement::NPOINTS * DisplacementDim);
@@ -327,8 +327,7 @@ public:
 
             auto const& C = _ip_data[ip].C;
 
-            double const S =
-                _process_data.specific_storage(t, x_position)[0];
+            double const S = _process_data.specific_storage(t, x_position)[0];
             double const K_over_mu =
                 _process_data.intrinsic_permeability(t, x_position)[0] /
                 _process_data.fluid_viscosity(t, x_position)[0];
@@ -394,8 +393,7 @@ public:
             .noalias() += Kup.transpose() / dt;
 
         // pressure equation
-        local_rhs.template segment<pressure_size>(pressure_index)
-            .noalias() -=
+        local_rhs.template segment<pressure_size>(pressure_index).noalias() -=
             laplace_p * p + storage_p * p_dot + Kup.transpose() * u_dot;
 
         // displacement equation
@@ -604,7 +602,8 @@ private:
 
     IntegrationMethod _integration_method;
     MeshLib::Element const& _element;
-    SecondaryData<typename ShapeMatricesTypeDisplacement::ShapeMatrices::ShapeType>
+    SecondaryData<
+        typename ShapeMatricesTypeDisplacement::ShapeMatrices::ShapeType>
         _secondary_data;
 
     std::vector<std::vector<double>> _darcy_velocities =
@@ -612,7 +611,6 @@ private:
             DisplacementDim,
             std::vector<double>(_integration_method.getNumberOfPoints()));
 
-
     static const int pressure_index = 0;
     static const int pressure_size = ShapeFunctionPressure::NPOINTS;
     static const int displacement_index = ShapeFunctionPressure::NPOINTS;
diff --git a/ProcessLib/HydroMechanics/HydroMechanicsProcess.cpp b/ProcessLib/HydroMechanics/HydroMechanicsProcess.cpp
index 5882b72e349f2a0168d6638d121d67c3c89146e0..12614d40370c3eb923b5988244f79f9cd2aa7306 100644
--- a/ProcessLib/HydroMechanics/HydroMechanicsProcess.cpp
+++ b/ProcessLib/HydroMechanics/HydroMechanicsProcess.cpp
@@ -7,16 +7,15 @@
  *
  */
 
-#include "HydroMechanicsProcess-fwd.h"
 #include "HydroMechanicsProcess.h"
+#include "HydroMechanicsProcess-fwd.h"
 
 namespace ProcessLib
 {
 namespace HydroMechanics
 {
-
 template class HydroMechanicsProcess<2>;
 template class HydroMechanicsProcess<3>;
 
-}   // namespace HydroMechanics
-}   // namespace ProcessLib
+}  // namespace HydroMechanics
+}  // namespace ProcessLib
diff --git a/ProcessLib/HydroMechanics/HydroMechanicsProcess.h b/ProcessLib/HydroMechanics/HydroMechanicsProcess.h
index 45e3db37db7e6b4f39344c968b05c061afd97d15..4496c7fa41c5e4ef114593806b0d74cab0ca0eb2 100644
--- a/ProcessLib/HydroMechanics/HydroMechanicsProcess.h
+++ b/ProcessLib/HydroMechanics/HydroMechanicsProcess.h
@@ -139,7 +139,8 @@ private:
                 getExtrapolator(), _local_assemblers,
                 &HydroMechanicsLocalAssemblerInterface::getIntPtSigmaXY));
 
-        if (DisplacementDim == 3) {
+        if (DisplacementDim == 3)
+        {
             Base::_secondary_variables.addSecondaryVariable(
                 "sigma_xz", 1,
                 makeExtrapolator(
@@ -196,11 +197,9 @@ private:
                                  getIntPtDarcyVelocityZ));
     }
 
-    void assembleConcreteProcess(const double t, GlobalVector const& x,
-                                 GlobalMatrix& M, GlobalMatrix& K,
-                                 GlobalVector& b,
-                                 StaggeredCouplingTerm const&
-                                 coupling_term) override
+    void assembleConcreteProcess(
+        const double t, GlobalVector const& x, GlobalMatrix& M, GlobalMatrix& K,
+        GlobalVector& b, StaggeredCouplingTerm const& coupling_term) override
     {
         DBUG("Assemble HydroMechanicsProcess.");
 
diff --git a/ProcessLib/HydroMechanics/LocalDataInitializer.h b/ProcessLib/HydroMechanics/LocalDataInitializer.h
index 2869c4cd017b5ddeaf264ee926d8fa0662f80781..d2b68e03be5c71678234a36c58979cb49286f3b9 100644
--- a/ProcessLib/HydroMechanics/LocalDataInitializer.h
+++ b/ProcessLib/HydroMechanics/LocalDataInitializer.h
@@ -11,9 +11,9 @@
 
 #include <functional>
 #include <memory>
+#include <type_traits>
 #include <typeindex>
 #include <typeinfo>
-#include <type_traits>
 #include <unordered_map>
 
 #include "MeshLib/Elements/Elements.h"