diff --git a/wani.py b/wani.py
index c4488a6..916ad88 100644
--- a/wani.py
+++ b/wani.py
@@ -1024,16 +1024,17 @@ class Writer:
     @staticmethod
     def make_output_writer(args):
         return Writer(False, args.output, args.multiple_output,
-                      int(args.sort_by), args.sort_reversed)
+                      int(args.sort_by), args.sort_reversed, args.stats)
 
     @staticmethod
     def make_all_writer(args):
-        return Writer(True, args.all, False, -1, False)
+        return Writer(True, args.all, False, -1, False, False)
 
-    def __init__(self, all, filename, multiple_output, sort_by, sort_reversed):
+    def __init__(self, all, filename, multiple_output, sort_by, sort_reversed, stats):
         self.all = all
         self.output_file = filename
         self.multiple_output = multiple_output
+        self.stats = stats
 
         self.sort_by = sort_by
         self.sort_order = sort_reversed
@@ -1328,6 +1329,8 @@ if __name__ == '__main__':
     parser.add_argument('--multiple-output',
                         help='Generate one output for each syntactic structure',
                         action='store_true')
+    parser.add_argument('--stats',
+                        help='Output file should contain statistics', action='store_true')
 
     parser.add_argument('--sort-by',
                         help="Sort by a this column (index)", type=int, default=-1)