diff --git a/build/makefile b/build/makefile
index fc827b2..0f6f0ff 100644
--- a/build/makefile
+++ b/build/makefile
@@ -88,7 +88,7 @@ endif
 name    = amun
 
 files   = algebra blocks boundaries constants coordinates domains driver       \
-          equations error evolution gravity integrals interpolations io mesh   \
+          equations evolution gravity integrals interpolations io mesh         \
           mpitools operators parameters problems random refinement schemes     \
           shapes sources timers user_problem
 
diff --git a/src/error.F90 b/src/error.F90
deleted file mode 100644
index 015be0c..0000000
--- a/src/error.F90
+++ /dev/null
@@ -1,148 +0,0 @@
-!!******************************************************************************
-!!
-!!  This file is part of the AMUN source code, a program to perform
-!!  Newtonian or relativistic magnetohydrodynamical simulations on uniform or
-!!  adaptive mesh.
-!!
-!!  Copyright (C) 2008-2018 Grzegorz Kowal <grzegorz@amuncode.org>
-!!
-!!  This program 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 of the License, or
-!!  (at your option) any later version.
-!!
-!!  This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
-!!
-!!******************************************************************************
-!!
-!! module: ERROR
-!!
-!!  This module provides subroutines to print errors, warnings and
-!!  notifications in a unified format.
-!!
-!!******************************************************************************
-!
-module error
-
-! module variables are not implicit by default
-!
-  implicit none
-
-!- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-!
-  contains
-!
-!===============================================================================
-!
-! subroutine PRINT_ERROR:
-! ----------------------
-!
-!   Subroutine prints an error message with the module/subroutine where
-!   the error occurred.
-!
-!   Arguments:
-!
-!     loc - string informing about the place where the error occurred
-!           (for example 'module name::subroutine name:[line]');
-!     msg - string of the actual error message;
-!
-!===============================================================================
-!
-  subroutine print_error(loc, msg)
-
-! local variables are not implicit by default
-!
-    implicit none
-
-! subroutine arguments
-!
-    character(len=*), intent(in) :: loc, msg
-!
-!-------------------------------------------------------------------------------
-!
-    write(*,*)
-    write(*,"('[ERROR in ', a, ']: ', a)") trim(loc), trim(msg)
-
-!-------------------------------------------------------------------------------
-!
-  end subroutine print_error
-!
-!===============================================================================
-!
-! subroutine PRINT_WARNING:
-! ------------------------
-!
-!   Subroutine prints a warning message with the module/subroutine where
-!   the warning occurred.
-!
-!   Arguments:
-!
-!     loc - string informing about the place where the warning occurred
-!           (for example 'module name::subroutine name:[line]');
-!     msg - string of the actual warning message;
-!
-!===============================================================================
-!
-  subroutine print_warning(loc, msg)
-
-! local variables are not implicit by default
-!
-    implicit none
-
-! subroutine arguments
-!
-    character(len=*), intent(in) :: loc, msg
-!
-!-------------------------------------------------------------------------------
-!
-    write(*,*)
-    write(*,"('[WARNING in ', a, ']: ', a)") trim(loc), trim(msg)
-
-!-------------------------------------------------------------------------------
-!
-  end subroutine print_warning
-!
-!===============================================================================
-!
-! subroutine PRINT_NOTIFICATION:
-! -----------------------------
-!
-!   Subroutine prints a notification message with the module/subroutine where
-!   the notification occurred.
-!
-!   Arguments:
-!
-!     loc - string informing about the place where the notification occurred
-!           (for example 'module name::subroutine name:[line]');
-!     msg - string of the actual notification message;
-!
-!===============================================================================
-!
-  subroutine print_notification(loc, msg)
-
-! local variables are not implicit by default
-!
-    implicit none
-
-! subroutine arguments
-!
-    character(len=*), intent(in) :: loc, msg
-!
-!-------------------------------------------------------------------------------
-!
-    write(*,*)
-    write(*,"('[NOTIFICATION in ', a, ']: ', a)") trim(loc), trim(msg)
-
-!-------------------------------------------------------------------------------
-!
-  end subroutine print_notification
-
-!===============================================================================
-!
-end module