diff --git a/dev/JSON_to_CPP.py b/dev/JSON_to_CPP.py
index 9894cc3a..2546c643 100644
--- a/dev/JSON_to_CPP.py
+++ b/dev/JSON_to_CPP.py
@@ -2,6 +2,7 @@ import json as pyjson
 from datetime import datetime
 import struct
 import os
+import argparse, textwrap
 
 # 0: Input file path relative to dev folder
 # 1: Output file path relative to include folder
@@ -18,6 +19,9 @@ def TO_CPP(root_dir):
             n=1
         return [l[i:i+n] for i in range(0, len(l), n)]
     
+    # Normalise path name
+    root_dir = os.path.normpath(root_dir)
+    
     # First we package up the JSON files
     import package_json
     package_json.package_json(root_dir)
@@ -49,4 +53,19 @@ def TO_CPP(root_dir):
         f.close()
 
 if __name__=='__main__':
-    TO_CPP()
\ No newline at end of file
+    parser = argparse.ArgumentParser(
+      formatter_class=argparse.RawDescriptionHelpFormatter,
+      description=textwrap.dedent("""CoolProp
+      This program converts the JSON files from dev/fluid etc
+      to header files. It is necessary to give this program the
+      value for --path, this is the root directory where
+      dev/ can be found.""")
+    )
+                       
+    parser.add_argument('--path', required=False,
+                        help='Location of the root folder',
+                        default=None)
+                        
+    args = parser.parse_args()
+
+    TO_CPP(args.path)
\ No newline at end of file
diff --git a/dev/generate_headers.py b/dev/generate_headers.py
index ab521900..3ed8dfb9 100644
--- a/dev/generate_headers.py
+++ b/dev/generate_headers.py
@@ -80,7 +80,11 @@ def gitrev_to_file(root_dir):
         pass
     
 if __name__=='__main__':
-    version_to_file(root_dir = '..')
-    gitrev_to_file(root_dir = '..')
+    path = os.path.abspath(__file__)
+    path = os.path.dirname(path)
+    path = os.path.dirname(path)
+     
+    version_to_file(root_dir = path)
+    gitrev_to_file(root_dir = path)
     import JSON_to_CPP
-    JSON_to_CPP.TO_CPP(root_dir = '..')
\ No newline at end of file
+    JSON_to_CPP.TO_CPP(root_dir = path)
\ No newline at end of file