diff --git a/src/assemblers.cc b/src/assemblers.cc
index 005ec2ed8406352bf79f9e736efdba29471d0bfa..ecaf47d89b347b496a5b52e6fd4399b55fd4ccac 100644
--- a/src/assemblers.cc
+++ b/src/assemblers.cc
@@ -11,8 +11,7 @@
 #include "assemblers.hh"
 
 // Assembles Neumann boundary term in f
-template <class GridType, class GridView, class LocalVectorType,
-          class AssemblerType>
+template <class GridView, class LocalVectorType, class AssemblerType>
 void assemble_neumann(GridView const &gridView, AssemblerType const &assembler,
                       Dune::BitSetVector<1> const &neumannNodes,
                       Dune::BlockVector<LocalVectorType> &f,
@@ -25,23 +24,22 @@ void assemble_neumann(GridView const &gridView, AssemblerType const &assembler,
   SampleVector[1] = 0;
   ConstantFunction<LocalVectorType, LocalVectorType> const fNeumann(
       SampleVector);
-  NeumannBoundaryAssembler<GridType, LocalVectorType> neumannBoundaryAssembler(
-      fNeumann);
+  NeumannBoundaryAssembler<typename GridView::Grid, LocalVectorType>
+  neumannBoundaryAssembler(fNeumann);
   assembler.assembleBoundaryFunctional(neumannBoundaryAssembler, f,
                                        neumannBoundary);
 }
 
 // Assembles constant 1-function on frictional boundary in nodalIntegrals
-template <class GridType, class GridView, class LocalVectorType,
-          class AssemblerType>
+template <class GridView, class LocalVectorType, class AssemblerType>
 Dune::shared_ptr<Dune::BlockVector<Dune::FieldVector<double, 1>>>
 assemble_frictional(GridView const &gridView, AssemblerType const &assembler,
                     Dune::BitSetVector<1> const &frictionalNodes) {
   typedef Dune::FieldVector<double, 1> Singleton;
   BoundaryPatch<GridView> const frictionalBoundary(gridView, frictionalNodes);
   ConstantFunction<LocalVectorType, Singleton> const constantOneFunction(1);
-  NeumannBoundaryAssembler<GridType, Singleton> frictionalBoundaryAssembler(
-      constantOneFunction);
+  NeumannBoundaryAssembler<typename GridView::Grid, Singleton>
+  frictionalBoundaryAssembler(constantOneFunction);
 
   auto const nodalIntegrals = Dune::make_shared<Dune::BlockVector<Singleton>>();
   assembler.assembleBoundaryFunctional(frictionalBoundaryAssembler,
diff --git a/src/assemblers.hh b/src/assemblers.hh
index d37caf16a4edd58028b776cb93f37c6685dd42ad..ceceddee6fa2a2a4e611f9b258e39050bae2692f 100644
--- a/src/assemblers.hh
+++ b/src/assemblers.hh
@@ -12,16 +12,14 @@
 
 #include <dune/tectonic/globalnonlinearity.hh>
 
-template <class GridType, class GridView, class LocalVectorType,
-          class AssemblerType>
+template <class GridView, class LocalVectorType, class AssemblerType>
 void assemble_neumann(GridView const &gridView, AssemblerType const &assembler,
                       Dune::BitSetVector<1> const &neumannNodes,
                       Dune::BlockVector<LocalVectorType> &f,
                       Dune::VirtualFunction<double, double> const &neumann,
                       double time);
 
-template <class GridType, class GridView, class LocalVectorType,
-          class AssemblerType>
+template <class GridView, class LocalVectorType, class AssemblerType>
 Dune::shared_ptr<Dune::BlockVector<Dune::FieldVector<double, 1>>>
 assemble_frictional(GridView const &gridView, AssemblerType const &assembler,
                     Dune::BitSetVector<1> const &frictionalNodes);
diff --git a/src/assemblers_tmpl.cc b/src/assemblers_tmpl.cc
index e7f06cdd452e4b4c343a9792243189dafd088d34..1e42914dab143c5b6d98722e7f5507a611b72472 100644
--- a/src/assemblers_tmpl.cc
+++ b/src/assemblers_tmpl.cc
@@ -20,14 +20,14 @@ typedef GridType::LeafGridView GridView;
 typedef P1NodalBasis<GridView, double> P1Basis;
 typedef Assembler<P1Basis, P1Basis> AssemblerType;
 
-template void assemble_neumann<GridType, GridView, SmallVector, AssemblerType>(
+template void assemble_neumann<GridView, SmallVector, AssemblerType>(
     GridView const &gridView, AssemblerType const &assembler,
     Dune::BitSetVector<1> const &neumannNodes,
     Dune::BlockVector<SmallVector> &f,
     Dune::VirtualFunction<double, double> const &neumann, double time);
 
 template Dune::shared_ptr<Dune::BlockVector<Dune::FieldVector<double, 1>>>
-assemble_frictional<GridType, GridView, SmallVector, AssemblerType>(
+assemble_frictional<GridView, SmallVector, AssemblerType>(
     GridView const &gridView, AssemblerType const &assembler,
     Dune::BitSetVector<1> const &frictionalNodes);
 
diff --git a/src/one-body-sample.cc b/src/one-body-sample.cc
index dad7d5eb82f131b36d6ba47d6ff881b448201fec..ce2d59119041cfd398c1b5465b7c90bce5067b11 100644
--- a/src/one-body-sample.cc
+++ b/src/one-body-sample.cc
@@ -320,9 +320,8 @@ int main(int argc, char *argv[]) {
     SumNorm<VectorType> const velocityEnergyNorm(1.0, stiffnessMatrixNorm, 1.0,
                                                  massMatrixNorm);
 
-    auto const nodalIntegrals =
-        assemble_frictional<GridType, GridView, SmallVector>(
-            leafView, p1Assembler, frictionalNodes);
+    auto const nodalIntegrals = assemble_frictional<GridView, SmallVector>(
+        leafView, p1Assembler, frictionalNodes);
 
     // {{{ Initial conditions
     VectorType u_initial(finestSize);
@@ -374,8 +373,8 @@ int main(int argc, char *argv[]) {
     auto const timesteps = parset.get<size_t>("timeSteps");
     auto const tau = parset.get<double>("endOfTime") / timesteps;
     auto const createRHS = [&](double _time, VectorType &_ell) {
-      assemble_neumann<GridType>(leafView, p1Assembler, neumannNodes, _ell,
-                                 neumannFunction, _time);
+      assemble_neumann(leafView, p1Assembler, neumannNodes, _ell,
+                       neumannFunction, _time);
       _ell += gravityFunctional;
     };