diff --git a/src/USER-PLUMED/fix_plumed.cpp b/src/USER-PLUMED/fix_plumed.cpp
index 7c05a02335..b326940d94 100644
--- a/src/USER-PLUMED/fix_plumed.cpp
+++ b/src/USER-PLUMED/fix_plumed.cpp
@@ -1,3 +1,19 @@
+/* ----------------------------------------------------------------------
+   LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
+   http://lammps.sandia.gov, Sandia National Laboratories
+   Steve Plimpton, sjplimp@sandia.gov
+
+   Copyright (2003) Sandia Corporation.  Under the terms of Contract
+   DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
+   certain rights in this software.  This software is distributed under
+   the GNU General Public License.
+
+   See the README file in the top-level LAMMPS directory.
+------------------------------------------------------------------------- */
+
+/* ----------------------------------------------------------------------
+   Contributing author: Gareth Tribello (Queens U, Belfast)
+------------------------------------------------------------------------- */
 
 #include <cmath>
 #include <cstdlib>
diff --git a/src/USER-PLUMED/fix_plumed.h b/src/USER-PLUMED/fix_plumed.h
index d4bc037024..55671f7c9b 100644
--- a/src/USER-PLUMED/fix_plumed.h
+++ b/src/USER-PLUMED/fix_plumed.h
@@ -1,3 +1,15 @@
+/* -*- c++ -*- ----------------------------------------------------------
+   LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
+   http://lammps.sandia.gov, Sandia National Laboratories
+   Steve Plimpton, sjplimp@sandia.gov
+
+   Copyright (2003) Sandia Corporation.  Under the terms of Contract
+   DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
+   certain rights in this software.  This software is distributed under
+   the GNU General Public License.
+
+   See the README file in the top-level LAMMPS directory.
+------------------------------------------------------------------------- */
 
 #ifdef FIX_CLASS