diff --git a/include/HEJ/Constants.hh b/include/HEJ/Constants.hh
index 9b93cf5..be79bae 100644
--- a/include/HEJ/Constants.hh
+++ b/include/HEJ/Constants.hh
@@ -1,40 +1,39 @@
 /** \file
  *  \brief Header file defining all global constants used for HEJ
  *
  *  \authors   The HEJ collaboration (see AUTHORS for details)
  *  \date      2019
  *  \copyright GPLv2 or later
  */
 #pragma once
 
 namespace HEJ{
 /// @name QCD parameters
 //@{
   constexpr double N_C = 3.;    //!< number of Colours
   constexpr double C_A = N_C;    //!< \f$C_A\f$
   constexpr double C_F = (N_C*N_C - 1.)/(2.*N_C); //!< \f$C_F\f$
   constexpr double t_f = 0.5; //!< \f$t_f\f$
   constexpr double n_f = 5.;    //!< number light flavours
   constexpr double beta0 = 11./3.*C_A - 4./3.*t_f*n_f;  //!< \f$\beta_0\f$
 //@}
 /// @name QFT parameters
 //@{
-  constexpr double gw = 0.653233; //!< elector-weak coupling
   constexpr double MW = 80.419; //!< The W mass in GeV/c^2
   constexpr double GammaW = 2.0476; //!< the W width in GeV/c^2
 
   //@}
 /// @name Generation Parameters
 //@{
   //! @brief Default scale for virtual correction
   //! \f$\lambda\f$ cf. eq. (20) in \cite Andersen:2011hs
   constexpr double CLAMBDA = 0.2;
   constexpr double CMINPT = 0.2;  //!< minimal \f$p_t\f$ of all partons
 //@}
 /// @name Conventional Parameters
 //@{
   //! Value of first colour for colour dressing, according to LHE convention
   //! \cite Boos:2001cv
   constexpr int COLOUR_OFFSET = 501;
 //@}
 }