diff --git a/.gitignore b/.gitignore
index 2fe31e4..29d76fc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,14 @@
+# Exclude
 __pycache__
+*.log
+*.error
+*.bak
+*.csv
+*.txt
 venv
-test_output_file.csv
-test_input_file.csv
\ No newline at end of file
+config.yml
+app/config.yml
+config/config.yml
+.env
+
+# Exception
\ No newline at end of file
diff --git a/iplookup.py b/iplookup.py
index bfe88e4..c18559b 100755
--- a/iplookup.py
+++ b/iplookup.py
@@ -9,6 +9,7 @@
 # 14/08/2025	0.04	Add proxy support
 # 05/09/2025	0.05	Change standard output to JSON format and proxy configuration
 # 29/10/2025	0.06	Search FQDN from certificates found on opened/filtered ports
+# 04/08/2026	0.07	Fix the type of the field argument
 
 import argparse
 import os
@@ -21,7 +22,7 @@
 from lib.ipinfo import ip
 
 
-__version__ = '0.06'
+__version__ = '0.07'
 
 def get_options():
 	""" Argument control """
@@ -33,7 +34,7 @@ def get_options():
 	parser.add_argument('-i', dest='ip', help='IP to check', metavar='<ip address>')
 	parser.add_argument('--file', dest='ipfile', help='IPs to check', metavar='<filename>', action='store')
 	parser.add_argument('-s', '--separator', dest='separator', help='specify the separator used in input CSV file', metavar='<separator_character>', default=',')
-	parser.add_argument('--field', '--field', dest='field', help='select field includes IP address', metavar='<separator_field>')
+	parser.add_argument('--field', '--field', dest='field', help='select field includes IP address', metavar='<separator_field>', type=int)
 	parser.add_argument('--format', dest='output_format', help='specify output format (default: csv)', choices=['json', 'csv'], default='csv', type=str.lower)
 	parser.add_argument('-o', '--output', dest='output_file', help='specify the output filename', metavar='<filename>', action='store')
 	parser.add_argument('--proxy', dest='proxy', help='specify HTTP proxy with port. Example: "localhost:3128"', metavar='<proxy_host>:<proxy_port>', type=parse_proxy, action='store')