diff --git a/src/ASPHERE/pair_ylz.h b/src/ASPHERE/pair_ylz.h
index 976a4d2465..f2ac26aa06 100644
--- a/src/ASPHERE/pair_ylz.h
+++ b/src/ASPHERE/pair_ylz.h
@@ -28,18 +28,18 @@ namespace LAMMPS_NS {
 class PairYLZ : public Pair {
  public:
   PairYLZ(LAMMPS *lmp);
-  virtual ~PairYLZ();
-  virtual void compute(int, int);
-  virtual void settings(int, char **);
+  ~PairYLZ() override;
+  void compute(int, int) override;
+  void settings(int, char **) override;
   void coeff(int, char **);
-  virtual void init_style();
-  double init_one(int, int);
-  void write_restart(FILE *);
-  void read_restart(FILE *);
-  void write_restart_settings(FILE *);
-  void read_restart_settings(FILE *);
-  void write_data(FILE *);
-  void write_data_all(FILE *);
+  void init_style() override;
+  double init_one(int, int) override;
+  void write_restart(FILE *) override;
+  void read_restart(FILE *) override;
+  void write_restart_settings(FILE *) override;
+  void read_restart_settings(FILE *) override;
+  void write_data(FILE *) override;
+  void write_data_all(FILE *) override;
 
  protected:
   double cut_global;