diff --git a/src/KOKKOS/fix_wall_lj93_kokkos.h b/src/KOKKOS/fix_wall_lj93_kokkos.h
index 9b566d9cc0..df34712a88 100644
--- a/src/KOKKOS/fix_wall_lj93_kokkos.h
+++ b/src/KOKKOS/fix_wall_lj93_kokkos.h
@@ -48,7 +48,7 @@ class FixWallLJ93Kokkos : public FixWallLJ93 {
   KOKKOS_INLINE_FUNCTION
   void operator()(const int&, value_type) const;
 
- public:
+ private:
   int dim,side;
   double coord;