Dear colleages

I am trying to convert my dicom files to .mgz from Freesurfer by using the mri_convert command, but it provides me the following error:

edward-virtual-machine:~/freesurfer/subjects/Artists/Controls/C1> mri_convert /home/edward/freesurfer/subjects/Artists/Controls/C1/mprage grappa2x_i0001.dcm mri/orig/001.mgz
mri_convert /home/edward/freesurfer/subjects/Artists/Controls/C1/mprage grappa2x_i0001.dcm mri/orig/001.mgz
mri_convert: extra argument ("mri/orig/001.mgz")
type mri_convert -u for usage

Could anybody help me with this problem?
Thanks in advance
-Edward