diff --git a/src/KSPACE/pair_born_coul_long.h b/src/KSPACE/pair_born_coul_long.h
index dfd77c4bb6..9cbeb9deb0 100644
--- a/src/KSPACE/pair_born_coul_long.h
+++ b/src/KSPACE/pair_born_coul_long.h
@@ -27,7 +27,7 @@ namespace LAMMPS_NS {
 class PairBornCoulLong : public Pair {
  public:
   PairBornCoulLong(class LAMMPS *);
-  ~PairBornCoulLong();
+  virtual ~PairBornCoulLong();
   void compute(int, int);
   void settings(int, char **);
   void coeff(int, char **);
@@ -40,7 +40,7 @@ class PairBornCoulLong : public Pair {
   double single(int, int, int, int, double, double, double, double &);
   void *extract(char *, int &);
 
- private:
+ protected:
   double cut_lj_global;
   double **cut_lj,**cut_ljsq;
   double cut_coul,cut_coulsq;
diff --git a/src/KSPACE/pair_buck_coul_long.h b/src/KSPACE/pair_buck_coul_long.h
index ada634a11b..44b82d99de 100644
--- a/src/KSPACE/pair_buck_coul_long.h
+++ b/src/KSPACE/pair_buck_coul_long.h
@@ -27,7 +27,7 @@ namespace LAMMPS_NS {
 class PairBuckCoulLong : public Pair {
  public:
   PairBuckCoulLong(class LAMMPS *);
-  ~PairBuckCoulLong();
+  virtual ~PairBuckCoulLong();
   void compute(int, int);
   void settings(int, char **);
   void coeff(int, char **);
@@ -40,7 +40,7 @@ class PairBuckCoulLong : public Pair {
   double single(int, int, int, int, double, double, double, double &);
   void *extract(char *, int &);
 
- private:
+ protected:
   double cut_lj_global;
   double **cut_lj,**cut_ljsq;
   double cut_coul,cut_coulsq;