diff --git a/install/MarcMentat/apply_DAMASK_modifications.py b/install/MarcMentat/apply_DAMASK_modifications.py
index ba605b7db..c3a5a18f3 100755
--- a/install/MarcMentat/apply_DAMASK_modifications.py
+++ b/install/MarcMentat/apply_DAMASK_modifications.py
@@ -3,12 +3,18 @@
 import os
 import glob
 import argparse
+import shutil
 from pathlib import Path
 
 import damask
 
-def copy_and_replace(in_file,dst,msc_root,editor):
-    with open(in_file) as f_in, open(dst/Path(in_file).name,'w') as f_out:
+def copy_and_replace(patch,orig,msc_root,editor):
+    try:
+        shutil.copyfile(orig,orig.parent/patch.stem) 
+    except shutil.SameFileError:
+        pass
+    damask.execute(f'patch {orig.parent/patch.stem} {patch} -b}')
+    with open(orig.parent/patch.stem) as f_in, open(orig.parent/patch.stem,'w') as f_out:
         f_out.write(f_in.read().replace('%INSTALLDIR%',msc_root).replace('%EDITOR%',editor))
 
 
@@ -30,31 +36,27 @@ parser.add_argument('--damask-root', dest='damask_root', metavar = 'string',
                     help='DAMASK root directory')
 
 args = parser.parse_args()
-msc_root    = Path(args.msc_root)
-damask_root = Path(args.damask_root)
-msc_version = args.msc_version
+msc_root    = Path(args.msc_root).expanduser()
+damask_root = Path(args.damask_root).expanduser()
+msc_version = int(args.msc_version) if str(args.msc_version).split('.')[1] == '0' else args.msc_version
+
+matches = {'Marc_tools':  [['comp_user','comp_damask_*mp'],
+                           ['run_marc','run_damask_*mp'],
+                           ['include_linux64','include_linux64']],
+           'Mentat_bin':  [['edit_window','edit_window'],
+                           ['submit1','submit?'],
+                           ['kill1','kill?']],
+           'Mentat_menus':[['job_run.ms','job_run.ms']]}
 
 
-print('adapting Marc tools...\n')
-
-src = damask_root/f'install/MarcMentat/{msc_version}/Marc_tools'
-dst = msc_root/f'marc{msc_version}/tools'
-for in_file in glob.glob(str(src/'*damask*')) + [str(src/'include_linux64')]:
-    copy_and_replace(in_file,dst,args.msc_root,args.editor)
-
-
-print('adapting Mentat scripts and menus...\n')
-
-src = damask_root/f'install/MarcMentat/{msc_version}/Mentat_bin'
-dst = msc_root/f'mentat{msc_version}/bin'
-for in_file in glob.glob(str(src/'*[!.original]')):
-    copy_and_replace(in_file,dst,args.msc_root,args.editor)
-
-src = damask_root/f'install/MarcMentat/{msc_version}/Mentat_menus'
-dst = msc_root/f'mentat{msc_version}/menus'
-for in_file in glob.glob(str(src/'job_run.ms')):
-    copy_and_replace(in_file,dst,args.msc_root,args.editor)
+print('patching files...\n')
 
+for directory in glob.glob(str(damask_root/f'install/MarcMentat/{msc_version}/*')):
+    for orig, mods in matches[Path(directory).name]:
+        dirs = (msc_root/Path(directory)).name.lower().split('_')
+        orig = msc_root/f'{dirs[0]}{msc_version}/{dirs[1]}/{orig}'
+        for patch in glob.glob(f'{directory}/{mods}.patch'):
+            copy_and_replace(Path(patch),orig,msc_root,editor)
 
 print('compiling Mentat menu binaries...')