diff --git a/src/state/ageinglawstateupdater.hh b/src/state/ageinglawstateupdater.hh
index abdb39f2bd712ff7269237ec5ebf133f2db99652..e7176a1efff6a30845ca7835371a204d796f2b89 100644
--- a/src/state/ageinglawstateupdater.hh
+++ b/src/state/ageinglawstateupdater.hh
@@ -11,10 +11,10 @@ class AgeingLawStateUpdater : public StateUpdater<ScalarVector, Vector> {
                         Dune::BitSetVector<1> const &_nodes, double _L,
                         double _V0);
 
-  void virtual nextTimeStep();
-  void virtual setup(double _tau);
-  void virtual solve(Vector const &velocity_field);
-  void virtual extractAlpha(ScalarVector &);
+  void nextTimeStep() override;
+  void setup(double _tau) override;
+  void solve(Vector const &velocity_field) override;
+  void extractAlpha(ScalarVector &) override;
 
 private:
   ScalarVector alpha_o;
diff --git a/src/state/sliplawstateupdater.hh b/src/state/sliplawstateupdater.hh
index fa03bf700f06c0d707e7fad56470268fea555714..9bb82210bb3f6769688547d0251b713e0187b3f5 100644
--- a/src/state/sliplawstateupdater.hh
+++ b/src/state/sliplawstateupdater.hh
@@ -11,10 +11,10 @@ class SlipLawStateUpdater : public StateUpdater<ScalarVector, Vector> {
                       Dune::BitSetVector<1> const &_nodes, double _L,
                       double _V0);
 
-  void virtual nextTimeStep();
-  void virtual setup(double _tau);
-  void virtual solve(Vector const &velocity_field);
-  void virtual extractAlpha(ScalarVector &);
+  void nextTimeStep() override;
+  void setup(double _tau) override;
+  void solve(Vector const &velocity_field) override;
+  void extractAlpha(ScalarVector &) override;
 
 private:
   ScalarVector alpha_o;