diff --git a/src/optimize_dmfet_potential.F b/src/optimize_dmfet_potential.F
index a563416682..2cfd038e39 100644
--- a/src/optimize_dmfet_potential.F
+++ b/src/optimize_dmfet_potential.F
@@ -1,3 +1,8 @@
+!--------------------------------------------------------------------------------------------------!
+!   CP2K: A general program to perform molecular dynamics simulations                              !
+!   Copyright (C) 2000 - 2018  CP2K developers group                                               !
+!--------------------------------------------------------------------------------------------------!
+
 MODULE optimize_dmfet_potential
    USE cp_blacs_env,                    ONLY: cp_blacs_env_create,&
                                               cp_blacs_env_release,&