diff --git a/env/CONFIG b/env/CONFIG
index 380197583..5d92af7fa 100644
--- a/env/CONFIG
+++ b/env/CONFIG
@@ -2,4 +2,4 @@
 set DAMASK_NUM_THREADS  = 4
 
 set MSC_ROOT            = /opt/msc
-set MARC_VERSION        = 2019.1
+set MSC_VERSION         = 2019.1
diff --git a/installation/mods_MarcMentat/apply_DAMASK_modifications.py b/installation/mods_MarcMentat/apply_DAMASK_modifications.py
index 38a6078b3..51f5e2312 100755
--- a/installation/mods_MarcMentat/apply_DAMASK_modifications.py
+++ b/installation/mods_MarcMentat/apply_DAMASK_modifications.py
@@ -7,7 +7,7 @@ from pathlib import Path
 
 import damask
 
-marc_version = float(damask.environment.options['MARC_VERSION'])
+marc_version = float(damask.environment.options['MSC_VERSION'])
 if int(marc_version) == marc_version:
     marc_version = int(marc_version)
 msc_root     = Path(damask.environment.options['MSC_ROOT'])
@@ -15,7 +15,7 @@ damask_root  = damask.environment.root_dir
 
 parser = argparse.ArgumentParser(
      description='Apply DAMASK modification to MSC.Marc/Mentat',
-     epilog = f'MSC_ROOT={msc_root} and MARC_VERSION={marc_version} (from {damask_root}/env/CONFIG)')
+     epilog = f'MSC_ROOT={msc_root} and MSC_VERSION={marc_version} (from {damask_root}/env/CONFIG)')
 parser.add_argument('--editor', dest='editor', metavar='string', default='vi',
                     help='Name of the editor for MSC.Mentat (executable)')
 
@@ -23,7 +23,7 @@ parser.add_argument('--editor', dest='editor', metavar='string', default='vi',
 def copy_and_replace(in_file,dst):
     with open(in_file) as f:
         content = f.read()
-    content = content.replace('%INSTALLDIR%',msc_root)
+    content = content.replace('%INSTALLDIR%',str(msc_root))
     content = content.replace('%VERSION%',str(marc_version))
     content = content.replace('%EDITOR%', parser.parse_args().editor)
     with open(dst/Path(in_file).name,'w') as f:
diff --git a/python/damask/_environment.py b/python/damask/_environment.py
index d4b7abe51..9983a91aa 100644
--- a/python/damask/_environment.py
+++ b/python/damask/_environment.py
@@ -32,7 +32,7 @@ class Environment:
         options = {}
         for item in ['DAMASK_NUM_THREADS',
                      'MSC_ROOT',
-                     'MARC_VERSION',
+                     'MSC_VERSION',
                      ]:
             options[item] = os.environ[item] if item in os.environ else None
 
diff --git a/python/damask/solver/_marc.py b/python/damask/solver/_marc.py
index 12e36f7ed..e37a46488 100644
--- a/python/damask/solver/_marc.py
+++ b/python/damask/solver/_marc.py
@@ -8,7 +8,7 @@ from .. import environment
 class Marc:
     """Wrapper to run DAMASK with MSCMarc."""
 
-    def __init__(self,version=environment.options['MARC_VERSION']):
+    def __init__(self,version=environment.options['MSC_VERSION']):
         """
         Create a Marc solver object.