diff --git a/code/DAMASK_spectral_driver.f90 b/code/DAMASK_spectral_driver.f90
index a2368d63b..f92260e15 100644
--- a/code/DAMASK_spectral_driver.f90
+++ b/code/DAMASK_spectral_driver.f90
@@ -339,14 +339,18 @@ program DAMASK_spectral_Driver
  if (appendToOutFile) then                                                                          ! after restart, append to existing results file
    open(newunit=resUnit,file=trim(getSolverWorkingDirectoryName())//trim(getSolverJobName())//&
                                '.spectralOut',form='UNFORMATTED', position='APPEND', status='OLD')
+                             !   '.spectralOut',access='STREAM', position='APPEND', status='OLD')
    open(newunit=statUnit,file=trim(getSolverWorkingDirectoryName())//trim(getSolverJobName())//&
                                '.sta',form='FORMATTED', position='APPEND', status='OLD')
  else                                                                                               ! open new files ...
    open(newunit=resUnit,file=trim(getSolverWorkingDirectoryName())//trim(getSolverJobName())//&
                                '.spectralOut',form='UNFORMATTED',status='REPLACE')
+                             !   '.spectralOut',access='STREAM',status='REPLACE')
    write(resUnit) 'load',       trim(loadCaseFile)                                                  ! ... and write header
    write(resUnit) 'workingdir', trim(getSolverWorkingDirectoryName())
    write(resUnit) 'geometry',   trim(geometryFile)
+   !write(resUnit) 'grid', res
+   !write(resUnit) 'size',  geomdim
    write(resUnit) 'resolution', res
    write(resUnit) 'dimension',  geomdim
    write(resUnit) 'materialpoint_sizeResults', materialpoint_sizeResults