diff --git a/pydelta/PyDelta.py b/pydelta/PyDelta.py
index 3a68124..ca224a6 100644
--- a/pydelta/PyDelta.py
+++ b/pydelta/PyDelta.py
@@ -4,6 +4,7 @@
 # Annotation string references are currently broken
 
 import argparse
+import locale
 
 from dataclasses import dataclass
 
@@ -78,13 +79,17 @@ def obfuscate_cli():
 	parser.add_argument('--no-refactor-names', action='store_false', help='Disables refactoring variable, function and args names.')
 	parser.add_argument('--no-encrypt-str', action='store_false', help='Disables encrypting strings.')
 	parser.add_argument('--no-compress-encrypt', action='store_false', help='Disables compression and encryption of the code.')
+	parser.add_argument('--utf-8', action='store_false', help='Use encoding=utf-8 to read input file.')
 	parser.add_argument('--str-encryption-amount', type=int, default=3, help='Amount of times to encrypt strings.')
 	parser.add_argument('--compress-encrypt-amount', type=int, default=30, help='Amount of times to compress and encrypt the code.')
 
 	args = parser.parse_args()
 
 	try:
-		with open(args.input_file, 'r') as infile:
+		my_encoding = locale.getpreferredencoding()
+        	if args.utf_8:
+        		my_encoding = 'utf-8'
+        	with open(args.input_file, 'r', encoding=my_encoding) as infile:
 			source_code = infile.read()
 	except Exception as e:
 		raise Exception(f"Could not read input file: {str(e)}")
@@ -105,4 +110,4 @@ def obfuscate_cli():
 		with open(args.output_file, 'w') as outfile:
 			outfile.write(obfuscated_code)
 	except Exception as e:
-		raise Exception(f"Could not write to file: {str(e)}")
\ No newline at end of file
+		raise Exception(f"Could not write to file: {str(e)}")