diff --git a/src/html_epub_preprocessor.py b/src/html_epub_preprocessor.py
index 6d04ddc..0002c8e 100644
--- a/src/html_epub_preprocessor.py
+++ b/src/html_epub_preprocessor.py
@@ -323,7 +323,7 @@ def unwrap_structural_tags(body_tag):
                 x.parent.unwrap()  # warning! could reflect on formatting/internal links in some cases
 
     parents_marks_are_body = [x.parent == body_tag for x in marks]
-    assert all(parents_marks_are_body), 'Anchor for chapter is deeper than 2 level.'
+    assert all(parents_marks_are_body), 'Anchor for chapter is deeper than 2 level. Chapters can not be parsed.'
 
     _preprocessing_headings(body_tag)
 
@@ -340,16 +340,16 @@ def unwrap_structural_tags(body_tag):
     return body_tag
 
 
-def get_tags_between_ids(first_id, href, html_soup):
-    h_marked = html_soup.find(attrs={'id': first_id, 'class': 'converter-chapter-mark'})
-    if h_marked:
-        p = h_marked.next_sibling
+def get_tags_between_chapter_marks(first_id, href, html_soup):
+    marked_tags = html_soup.find(attrs={'id': first_id, 'class': 'converter-chapter-mark'})
+    if marked_tags:
+        next_tag = marked_tags.next_sibling
         tags = []
-        while p:
-            if p.name == 'tmp' and p.attrs.get('class') == 'converter-chapter-mark':
+        while next_tag:
+            if next_tag.attrs.get('class') == 'converter-chapter-mark':
                 break
-            tags.append(p)
-            p = p.next_sibling
+            tags.append(next_tag)
+            next_tag = next_tag.next_sibling
 
         tags = [tag.extract() for tag in tags]
         html_soup.smooth()
@@ -368,7 +368,7 @@ def prepare_title_and_content(title, chapter_tag: BeautifulSoup, remove_title_fr
     to_remove = []
     for child in chapter_tag.contents:
         if isinstance(child, NavigableString):
-            s = re.sub(r'([\n\t\xa0])', '', child.string)
+            s = re.sub(r'([\n\t])', '', child.string)
             if s == '':
                 to_remove.append(child)