diff --git a/src/vtk.cc b/src/vtk.cc
index e2520307280de26f31e0e304d86d0620af195d3b..91074e634cac0de0b09d028a563d78490d3e2cf7 100644
--- a/src/vtk.cc
+++ b/src/vtk.cc
@@ -12,20 +12,20 @@ void writeVtk(VertexBasis const &vertexBasis, VectorType const &displacement,
   Dune::VTKWriter<typename VertexBasis::GridView> writer(
       vertexBasis.getGridView());
 
-  auto const displacement_ptr =
+  auto const displacementPointer =
       Dune::make_shared<VTKBasisGridFunction<VertexBasis, VectorType> const>(
           vertexBasis, displacement, "displacement");
-  writer.addVertexData(displacement_ptr);
+  writer.addVertexData(displacementPointer);
 
-  auto const state_ptr = Dune::make_shared<
+  auto const statePointer = Dune::make_shared<
       VTKBasisGridFunction<VertexBasis, SingletonVectorType> const>(
       vertexBasis, state, "state");
-  writer.addVertexData(state_ptr);
+  writer.addVertexData(statePointer);
 
-  auto const vonmises_ptr = Dune::make_shared<
+  auto const vonmisesPointer = Dune::make_shared<
       VTKBasisGridFunction<CellBasis, SingletonVectorType> const>(
       cellBasis, stress, "stress");
-  writer.addCellData(vonmises_ptr);
+  writer.addCellData(vonmisesPointer);
 
   writer.write(filename.c_str());
 }