diff --git a/code/Makefile b/code/Makefile
index 6ef85e6a2..d0d69b8d3 100644
--- a/code/Makefile
+++ b/code/Makefile
@@ -336,7 +336,7 @@ PRECISION_gfortran :=-fdefault-real-8 -fdefault-double-8 -DFLOAT=8 -DINT=4
 COMPILE         =$(OPENMP_FLAG_$(F90)) $(COMPILE_OPTIONS_$(F90)) $(STANDARD_CHECK_$(F90)) $(OPTIMIZATION_$(OPTI)_$(F90)) $(INCLUDE_DIRS) $(PRECISION_$(F90)) -DSpectral
 COMPILE_MAXOPTI =$(OPENMP_FLAG_$(F90)) $(COMPILE_OPTIONS_$(F90)) $(STANDARD_CHECK_$(F90)) $(OPTIMIZATION_$(MAXOPTI)_$(F90)) $(INCLUDE_DIRS) $(PRECISION_$(F90)) -DSpectral
 ###################################################################################################
-COMPILED_FILES = prec.o DAMASK_spectral_interface.o IO.o numerics.o debug.o math.o \
+COMPILED_FILES = prec.o DAMASK_spectral_interface.o IO.o libs.o numerics.o debug.o math.o \
                  FEsolving.o mesh.o material.o lattice.o \
                  constitutive_dislotwin.o constitutive_j2.o constitutive_phenopowerlaw.o \
                  constitutive_titanmod.o constitutive_nonlocal.o constitutive_none.o constitutive.o crystallite.o \
@@ -430,10 +430,14 @@ debug.o:                       debug.f90 \
                                numerics.o
 
 numerics.o:                    numerics.f90 \
-                               IO.o
+                               libs.o
                                
+libs.o:                        libs.f90 \
+                               IO.o
+
 IO.o:                          IO.f90 \
                                DAMASK_spectral_interface.o
+
 ifeq "$(F90)" "gfortran"
 DAMASK_spectral_interface.o:   DAMASK_spectral_interface.f90 \
                                prec.o
diff --git a/code/libs.f90 b/code/libs.f90
new file mode 100644
index 000000000..37a8bb94c
--- /dev/null
+++ b/code/libs.f90
@@ -0,0 +1,33 @@
+! Copyright 2011-13 Max-Planck-Institut für Eisenforschung GmbH
+!
+! This file is part of DAMASK,
+! the Düsseldorf Advanced Material Simulation Kit.
+!
+! DAMASK 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.
+!
+! DAMASK 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 DAMASK. If not, see <http://www.gnu.org/licenses/>.
+!
+!--------------------------------------------------------------------------------------------------
+! $Id$
+!--------------------------------------------------------------------------------------------------
+!> @author Martin Diehl, Max-Planck-Institut für Eisenforschung GmbH
+!> @brief dummy source for inclusion of Library files
+!--------------------------------------------------------------------------------------------------
+
+#ifdef Spectral
+#include "kdtree2.f90"
+#include "IR_Precision.f90"
+#include "Lib_VTK_IO.f90"
+#endif
+
+module libs
+end module libs
diff --git a/code/math.f90 b/code/math.f90
index cd522716f..f0daa583f 100644
--- a/code/math.f90
+++ b/code/math.f90
@@ -16,9 +16,6 @@
 ! You should have received a copy of the GNU General Public License
 ! along with DAMASK. If not, see <http://www.gnu.org/licenses/>.
 !
-#ifdef Spectral
-#include "kdtree2.f90"
-#endif
 !--------------------------------------------------------------------------------------------------
 ! $Id$
 !--------------------------------------------------------------------------------------------------