diff --git a/README.md b/README.md
index e3b2310..5c8b7be 100644
--- a/README.md
+++ b/README.md
@@ -145,7 +145,7 @@ crawl-docs https://example.com / -o output.md \
     --allowed-paths "/docs/" "/api/"
 ```
 
-#### Skipping Pre-Fetch and Post-Fetch URLs with Ignore Paths
+#### Skipping URLs with Ignore Paths
 
 ```bash
 Copiar código
diff --git a/src/libcrawler/libcrawler.py b/src/libcrawler/libcrawler.py
index c7ac686..ef80850 100644
--- a/src/libcrawler/libcrawler.py
+++ b/src/libcrawler/libcrawler.py
@@ -138,8 +138,8 @@ def remove_common_elements(soup, extra_remove_selectors=None):
     return soup
 
 
-def build_tree(start_url, base_url, user_agent='*', handle_robots_txt=True, headers={}, delay=1, delay_range=0.5, 
-               extra_remove_selectors=None, allowed_paths=None, ignore_paths=[]):
+def build_tree(start_url, base_url, user_agent='*', handle_robots_txt=True, 
+               headers={}, delay=1, delay_range=0.5, extra_remove_selectors=None, allowed_paths=None, ignore_paths=None):
     visited_links = set()
     root = PageNode(start_url)
     node_lookup = {}
@@ -166,6 +166,8 @@ def build_tree(start_url, base_url, user_agent='*', handle_robots_txt=True, head
             continue
         visited_links.add(current_link)
 
+        if ignore_paths is None:
+            ignore_paths = []
         if any(ignore_path in current_link for ignore_path in ignore_paths):
             logger.info(f"Skipping {current_link} matching ignore_paths")
             continue  
@@ -369,7 +371,8 @@ def crawl_and_convert(
     delay_range=0.5,
     extra_remove_selectors=None,
     similarity_threshold=0.8,
-    allowed_paths=None
+    allowed_paths=None,
+    ignore_paths=None
 ):
     # Build the tree and get page_markdowns and url_to_anchor
     page_markdowns, url_to_anchor = build_tree(
@@ -381,7 +384,8 @@ def crawl_and_convert(
         delay=delay,
         delay_range=delay_range,
         extra_remove_selectors=extra_remove_selectors,
-        allowed_paths=allowed_paths
+        allowed_paths=allowed_paths,
+        ignore_paths=ignore_paths
     )
 
     # Deduplicate content
diff --git a/src/tests/test_crawler.py b/src/tests/test_crawler.py
index d361075..bf11fd7 100644
--- a/src/tests/test_crawler.py
+++ b/src/tests/test_crawler.py
@@ -523,12 +523,10 @@ def side_effect(url, headers={}):
             start_url=self.start_url,
             base_url=self.base_url,
             output_filename=self.output_filename,
-            handle_robots_txt=False,
             delay=0,
             delay_range=0,
             extra_remove_selectors=['header', 'footer', '.footer'],
             similarity_threshold=0.6,  # Increased threshold
-            allowed_paths=None,
             headers=headers
         )