diff --git a/src/epub_converter/html_epub_preprocessor.py b/src/epub_converter/html_epub_preprocessor.py
index 793247c..18f8902 100644
--- a/src/epub_converter/html_epub_preprocessor.py
+++ b/src/epub_converter/html_epub_preprocessor.py
@@ -79,10 +79,8 @@ def get_tags_between_chapter_marks(first_id: str, href: str, html_soup: Beautifu
 def prepare_title(title_of_chapter: str) -> str:
     """Function finalise processing/cleaning title"""
     title_str = BeautifulSoup(title_of_chapter, features="lxml").string
-    title_str = re.sub(r"([\n\t\xa0])", " ", title_str)
-    title_str = re.sub(r" +", " ", title_str).rstrip()
-    # clean whitespace characters ([\r\n\t\f\v ])
-    title_str = re.sub(r"(^\s+)|(\s+$)", "", title_str)
+    # clean extra whitespace characters ([\r\n\t\f\v ])
+    title_str = re.sub(r"[\s\xa0]", " ", title_str).strip()
     return title_str