diff --git a/Applications/FileIO/FEFLOW/FEFLOWMeshInterface.cpp b/Applications/FileIO/FEFLOW/FEFLOWMeshInterface.cpp
index fa7cb829c9dc5603b051de9ff97e32187de89d77..476d873bc52af81e531a77139b83c18811599e05 100644
--- a/Applications/FileIO/FEFLOW/FEFLOWMeshInterface.cpp
+++ b/Applications/FileIO/FEFLOW/FEFLOWMeshInterface.cpp
@@ -232,8 +232,8 @@ MeshLib::Mesh* FEFLOWMeshInterface::readFEFLOWFile(const std::string& filename)
     else
     {
         opt_material_ids->resize(mesh->getNumberOfElements());
-        setMaterialIDs(fem_class, fem_dim, lines, vec_elementsets,
-                       vec_elements, *opt_material_ids);
+        setMaterialIDs(fem_class, fem_dim, lines, vec_elementsets, vec_elements,
+                       *opt_material_ids);
     }
 
     if (isXZplane)
diff --git a/Applications/InSituLib/Adaptor.cpp b/Applications/InSituLib/Adaptor.cpp
index f2d26c8dbd7a76148e8b1eaf8943633988883e8d..84d636ff5cee9d8b3d0bbcfda51832ea1a3c2fa9 100644
--- a/Applications/InSituLib/Adaptor.cpp
+++ b/Applications/InSituLib/Adaptor.cpp
@@ -40,7 +40,8 @@ void Initialize(BaseLib::ConfigTree const& scripts_config,
     {
         auto scriptPath =
             //! \ogs_file_param{prj__insitu__scripts__script__name}
-            std::filesystem::path(script_config.getConfigParameter<std::string>("name"));
+            std::filesystem::path(
+                script_config.getConfigParameter<std::string>("name"));
         if (scriptPath.is_relative())
         {
             scriptPath = std::filesystem::path(path) / scriptPath;
diff --git a/NumLib/Fem/Integration/IntegrationMethodRegistry.cpp b/NumLib/Fem/Integration/IntegrationMethodRegistry.cpp
index 3139233a1680dde9e167a8e126976df39894e8eb..b09b7a806882b5dbbbbb868d3890091a6b9d9603 100644
--- a/NumLib/Fem/Integration/IntegrationMethodRegistry.cpp
+++ b/NumLib/Fem/Integration/IntegrationMethodRegistry.cpp
@@ -213,4 +213,4 @@ GenericIntegrationMethod const& getIntegrationMethod(
         "No integration methods are available for mesh elements of type {}",
         mesh_element_type.name());
 }
-}  // namespace NumLib
+}  // namespace NumLib::IntegrationMethodRegistry
diff --git a/Tests/MaterialLib/TestMPLIdealGasLawBinaryMixture.cpp b/Tests/MaterialLib/TestMPLIdealGasLawBinaryMixture.cpp
index 6f76303fbda971ab88dbd7089c915d54e5e96703..09217b8a7aecea2bfc85073c046c09b5720c7e2b 100644
--- a/Tests/MaterialLib/TestMPLIdealGasLawBinaryMixture.cpp
+++ b/Tests/MaterialLib/TestMPLIdealGasLawBinaryMixture.cpp
@@ -146,9 +146,7 @@ TEST(MaterialPropertyLib, IdealGasLawBinaryMixture)
                 // Check derivatives via central differences
                 auto central_difference =
                     [&](double plus, double minus, double eps)
-                    {
-                        return (plus - minus) / (2 * eps);
-                    };
+                { return (plus - minus) / (2 * eps); };
 
                 // Perturbation of gas pressure
                 auto const eps_pGR = 10.;