diff --git a/dune/tectonic/globallaursennonlinearity.hh b/dune/tectonic/globallaursennonlinearity.hh
index 2a6d14bf25bd21ac96f2e863e167fa15ccb8b73f..4b24e83c1a7c6e96ca0c955c76507086eedb16f1 100644
--- a/dune/tectonic/globallaursennonlinearity.hh
+++ b/dune/tectonic/globallaursennonlinearity.hh
@@ -15,12 +15,9 @@ template <int dim, class OuterFunctionType>
 class GlobalLaursenNonlinearity : public Dune::GlobalNonlinearity<dim> {
 public:
   GlobalLaursenNonlinearity(
-      std::vector<double> const &coefficientOfFriction,
-      std::vector<double> const &normalStress,
+      std::vector<double> const &mu, std::vector<double> const &normalStress,
       std::vector<Dune::FieldVector<double, 1>> const &nodalIntegrals)
-      : coefficientOfFriction(coefficientOfFriction),
-        normalStress(normalStress),
-        nodalIntegrals(nodalIntegrals) {}
+      : mu(mu), normalStress(normalStress), nodalIntegrals(nodalIntegrals) {}
 
   /*
     Return a restriction of the outer function to the i'th node. If
@@ -39,14 +36,14 @@ class GlobalLaursenNonlinearity : public Dune::GlobalNonlinearity<dim> {
   virtual Dune::NiceFunction *restriction(int i) const {
     double coefficient = nodalIntegrals[i][0];
     coefficient *= normalStress[i];
-    coefficient *= 1 + coefficientOfFriction[i];
+    coefficient *= 1 + mu[i];
     return new OuterFunctionType(coefficient);
   }
 
 private:
   // TODO: If we're clever, we only store one vector with the precomputed
   // results
-  std::vector<double> coefficientOfFriction;
+  std::vector<double> mu;
   std::vector<double> normalStress;
   std::vector<Dune::FieldVector<double, 1>> nodalIntegrals;
 };
diff --git a/dune/tectonic/globalruinanonlinearity.hh b/dune/tectonic/globalruinanonlinearity.hh
index a4fb93042e9406a7d03f58bda810b8379d44f103..a2b2cb68dbb7c19a746a46917bc6991cb27df5df 100644
--- a/dune/tectonic/globalruinanonlinearity.hh
+++ b/dune/tectonic/globalruinanonlinearity.hh
@@ -16,12 +16,11 @@ class GlobalRuinaNonlinearity : public Dune::GlobalNonlinearity<dim> {
 public:
   GlobalRuinaNonlinearity(
       std::vector<Dune::FieldVector<double, 1>> const &nodalIntegrals,
-      std::vector<double> const &a,
-      std::vector<double> const &coefficientOfFriction,
+      std::vector<double> const &a, std::vector<double> const &mu,
       std::vector<double> const &eta, std::vector<double> const &normalStress)
       : nodalIntegrals(nodalIntegrals),
         a(a),
-        coefficientOfFriction(coefficientOfFriction),
+        mu(mu),
         eta(eta),
         normalStress(normalStress) {}
 
@@ -32,15 +31,14 @@ class GlobalRuinaNonlinearity : public Dune::GlobalNonlinearity<dim> {
     if (nodalIntegrals[i][0] == 0)
       return new Dune::TrivialFunction();
     else
-      return new Dune::RuinaFunction(nodalIntegrals[i][0], a[i],
-                                     coefficientOfFriction[i], eta[i],
+      return new Dune::RuinaFunction(nodalIntegrals[i][0], a[i], mu[i], eta[i],
                                      normalStress[i]);
   }
 
 private:
   std::vector<Dune::FieldVector<double, 1>> nodalIntegrals;
   std::vector<double> a;
-  std::vector<double> coefficientOfFriction;
+  std::vector<double> mu;
   std::vector<double> eta;
   std::vector<double> normalStress;
 };
diff --git a/src/one-body-sample.cc b/src/one-body-sample.cc
index 97955995d5e6407e49eebb9522b1f6e92fead977..6eb97709eeb36b0d31d4efddcfd141d24a8de5f6 100644
--- a/src/one-body-sample.cc
+++ b/src/one-body-sample.cc
@@ -218,9 +218,9 @@ int main(int argc, char *argv[]) {
 
       // {{{ Assemble terms for the nonlinearity
 
-      std::vector<double> coefficientOfFriction;
-      coefficientOfFriction.resize(grid.size(grid.maxLevel(), dim));
-      std::fill(coefficientOfFriction.begin(), coefficientOfFriction.end(),
+      std::vector<double> mu;
+      mu.resize(grid.size(grid.maxLevel(), dim));
+      std::fill(mu.begin(), mu.end(),
                 parset.get<double>("boundary.friction.mu"));
 
       std::vector<double> normalStress;
@@ -244,11 +244,11 @@ int main(int argc, char *argv[]) {
                   parset.get<double>("boundary.friction.eta"));
 
         myGlobalNonlinearity = new Dune::GlobalRuinaNonlinearity<dim>(
-            nodalIntegrals, a, coefficientOfFriction, eta, normalStress);
+            nodalIntegrals, a, mu, eta, normalStress);
       } else if (friction_model == std::string("Laursen")) {
         myGlobalNonlinearity =
             new Dune::GlobalLaursenNonlinearity<dim, Dune::LinearFunction>(
-                coefficientOfFriction, normalStress, nodalIntegrals);
+                mu, normalStress, nodalIntegrals);
       } else {
         assert(false);
       }