diff --git a/jass_preprocessing/__main__.py b/jass_preprocessing/__main__.py
index 75e38801adc1c253a48c6c8baf7e634e60245511..b089d3cbd56aaf02b8e4d7cca8c3d01e0e9e3256 100644
--- a/jass_preprocessing/__main__.py
+++ b/jass_preprocessing/__main__.py
@@ -2,7 +2,7 @@
 Read raw GWAS summary statistics, filter and format
 Write clean GWAS datasets by chromosome
 """
-__updated__ = '2018-26-06'
+__updated__ = '2022-03-02'
 
 import pandas as pd
 import jass_preprocessing as jp
@@ -95,7 +95,6 @@ def add_preprocessing_argument():
     parser.add_argument('--additional-masked-region', required=False, help= "List of dictionary containing coordinate of region to mask. For example :[{'chr':6, 'start':50000000, 'end': 70000000}, {'chr':6, 'start':100000000, 'end': 120000000}]", default='None')
 
     parser.add_argument('--imputation-quality-treshold', required=False, help= "minimum imputation quality in summary statistics", default='None')
-    parser.add_argument('--index-type', required=False, help= "type of index : rsID or chr:postion:ref_allele:alt_allele", default='rs-number')
 
     parser.set_defaults(func=launch_preprocessing)