diff --git a/src/epub_converter/html_epub_processor.py b/src/epub_converter/html_epub_processor.py
index 7a8cd0a..7f87c59 100644
--- a/src/epub_converter/html_epub_processor.py
+++ b/src/epub_converter/html_epub_processor.py
@@ -8,7 +8,7 @@ from src.util.helpers import BookLogger
 
 
 class HtmlEpubProcessor:
-    def __init__(self, preset_path: str = "presets/presets.json", logger: BookLogger = None):
+    def __init__(self, preset_path: str = "presets/epub_presets.json", logger: BookLogger = None):
         self.preset = json.load(open(preset_path))
         self.logger = logger
         self.name2action = {
@@ -173,8 +173,8 @@ class HtmlEpubProcessor:
         # wrap subtag with items
         kwargs["tag"].append(tag_to_insert)
 
-    def _process_tags(self,
-                      chapter_tag: BeautifulSoup,
+    @staticmethod
+    def _process_tags(chapter_tag: BeautifulSoup,
                       rules: List[Dict[str, Union[List[str], str, Dict[str, Union[List[Dict[str, str]], int, str]]]]],
                       action):
         """
@@ -199,24 +199,24 @@ class HtmlEpubProcessor:
                 for condition_on_tag in ((k, v) for k, v in rule["condition"].items() if v):
                     if condition_on_tag[0] == "parent_tags":
                         for tag in chapter_tag.select(', '.join([condition_on_tag[1] + " > " + re.sub(r"[\^$]", "", tag)
-                                                              for tag in tags])):
+                                                                 for tag in tags])):
                             tag.parent.attrs.update(tag.attrs)
                             action(chapter_tag=chapter_tag, tag=tag, rule=rule)
                     elif condition_on_tag[0] == "child_tags":
                         for tag in chapter_tag.select(', '.join([re.sub(r"[\^$]", "", tag) + condition_on_tag[1]
-                                                              for tag in tags])):
-                                action(chapter_tag=chapter_tag, tag=tag, rule=rule)
+                                                                 for tag in tags])):
+                            action(chapter_tag=chapter_tag, tag=tag, rule=rule)
                     elif condition_on_tag[0] == "attrs":
                         for attr in rule["condition"]["attrs"]:
                             for tag in chapter_tag.find_all([re.compile(tag) for tag in tags],
-                                                                    {attr["name"]: re.compile(fr"{attr['value']}")}):
+                                                            {attr["name"]: re.compile(fr"{attr['value']}")}):
                                 action(chapter_tag=chapter_tag, tag=tag, rule=rule)
                     # attr replacer
                     elif condition_on_tag[0] == "tags":
                         attr = rule["attr"]
                         for tag in chapter_tag.find_all([re.compile(tag) for tag in tags],
                                                         {attr['name']: re.compile(fr"{attr['value']}")}):
-                           action(chapter_tag=chapter_tag, tag=tag, rule=rule)
+                            action(chapter_tag=chapter_tag, tag=tag, rule=rule)
             else:
                 for tag in chapter_tag.find_all([re.compile(tag) for tag in tags]):
                     action(chapter_tag=chapter_tag, tag=tag, rule=rule)