diff --git a/parser.py b/parser.py
index 328c3a5..4111ff5 100644
--- a/parser.py
+++ b/parser.py
@@ -1,6 +1,7 @@
 from argparse import ArgumentParser
 from glob import glob
 from typing import List, Tuple
+from re import sub
 
 from pandas import DataFrame, read_html, Series
 
@@ -35,7 +36,9 @@ def preprocess_dataframe(adapters) -> Series:
 def save_to_file(filename, adapters) -> None:
     with open(filename, "w") as f:
         for index, value in adapters.iteritems():
-            fasta_entry = f">{index}\n{value}\n"
+            sequence_str = "".join(map(str, index))
+            sequence_id = sub(r"[()]", "", sequence_str)
+            fasta_entry = f">{sequence_id}\n{value}\n"
             f.write(fasta_entry)