diff --git a/src/USER-OMP/fix_nve_sphere_omp.h b/src/USER-OMP/fix_nve_sphere_omp.h
index ea965f1bb1..95cb4cf0af 100644
--- a/src/USER-OMP/fix_nve_sphere_omp.h
+++ b/src/USER-OMP/fix_nve_sphere_omp.h
@@ -1,4 +1,4 @@
-/* ----------------------------------------------------------------------
+/* -*- c++ -*- ----------------------------------------------------------
    LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
    http://lammps.sandia.gov, Sandia National Laboratories
    Steve Plimpton, sjplimp@sandia.gov