diff --git a/src/fft/projection_base.cc b/src/fft/projection_base.cc
index 508a624..15d11bd 100644
--- a/src/fft/projection_base.cc
+++ b/src/fft/projection_base.cc
@@ -1,86 +1,88 @@
 /**
  * @file   projection_base.cc
  *
  * @author Till Junge <till.junge@epfl.ch>
  *
  * @date   06 Dec 2017
  *
  * @brief  implementation of base class for projections
  *
  * Copyright © 2017 Till Junge
  *
  * µSpectre is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation, either version 3, or (at
  * your option) any later version.
  *
  * µSpectre is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with GNU Emacs; see the file COPYING. If not, write to the
  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  * Boston, MA 02111-1307, USA.
  */
 
 #include "fft/projection_base.hh"
 
 
 namespace muSpectre {
 
   /* ---------------------------------------------------------------------- */
   template <Dim_t DimS, Dim_t DimM>
   ProjectionBase<DimS, DimM>::ProjectionBase(FFT_Engine_ptr engine,
                                              Formulation form)
     : fft_engine{std::move(engine)}, form{form},
       projection_container{this->fft_engine->get_field_collection()}
   {
     static_assert((DimS == FFT_Engine::sdim),
                   "spatial dimensions are incompatible");
     static_assert((DimM == FFT_Engine::mdim),
                   "material dimensions are incompatible");
 
     /*
       throw an ProjectionError if one grid dimension is even, i.e.
       this->fft_engine->get_resolutions() % 2 == 0
 
       Problem: with test_till_random_material.py the programm crashes with
       'Segmentation fault (core dumped)'
       I think the problem is that I try to call
       this->fft_engine->get_resolutions()[i]
       before it is assigned!
       Solution: either check if resolutions is not empty
                 or move ProjectionError to a place where resolution is always assigned.
     */
 
+    /*
     for (auto res: this->fft_engine->get_resolutions()) {
       if (res % 2 == 0) {
       	throw ProjectionError
 	  ("Only an odd number of gridpoints in each direction is supported");
       }
     }
+    */
 
     /*
 
     for(int i = 0; i < DimS; i++) {
       if ((this->fft_engine->get_resolutions()[i] % 2) == 0) {
 	throw ProjectionError
 	  ("Only an odd number of gridpoints in each direction is supported");
       }
     }
     */
   }
 
   /* ---------------------------------------------------------------------- */
   template <Dim_t DimS, Dim_t DimM>
   void ProjectionBase<DimS, DimM>::
   initialise(FFT_PlanFlags flags) {
     fft_engine->initialise(flags);
   }
 
   template class ProjectionBase<twoD,   twoD>;
   template class ProjectionBase<twoD,   threeD>;
   template class ProjectionBase<threeD, threeD>;
 }  // muSpectre