diff --git a/crawl4ai/chunking_strategy.py b/crawl4ai/chunking_strategy.py
index f46cb667c..a0bfe1bf4 100644
--- a/crawl4ai/chunking_strategy.py
+++ b/crawl4ai/chunking_strategy.py
@@ -71,7 +71,6 @@ def __init__(self, **kwargs):
         """
         Initialize the NlpSentenceChunking object.
         """
-        from crawl4ai.le.legacy.model_loader import load_nltk_punkt
         load_nltk_punkt()
 
     def chunk(self, text: str) -> list:
@@ -86,7 +85,7 @@ def chunk(self, text: str) -> list:
         sentences = sent_tokenize(text)
         sens = [sent.strip() for sent in sentences]
 
-        return list(set(sens))
+        return sens
 
 
 # Topic-based segmentation using TextTiling