diff --git a/src/USER-MISC/fix_rhok.h b/src/USER-MISC/fix_rhok.h
index 3e0625430fab8156050fa25e72eaca86885715b5..784bf1d14a3572b72ac649590e62e8a05dd5db79 100644
--- a/src/USER-MISC/fix_rhok.h
+++ b/src/USER-MISC/fix_rhok.h
@@ -1,16 +1,5 @@
 /*
   fix_rhok.h
-
-  A fix to do umbrella sampling on rho(k).
-
-  The usage is as follows:
-
-  fix [name] [groupID] rhoKUmbrella [kx] [ky] [kz] [kappa = spring constant] [rhoK0]
-
-  where k_i = (2 pi / L_i) * n_i
-
-  Written by Ulf Pedersen and Patrick Varilly, 4 Feb 2010
-  Tweaked for LAMMPS 15 Jan 2010 version by Ulf Pedersen, 19 Aug 2010
 */
 
 #ifdef FIX_CLASS