diff --git a/crawl4ai/chunking_strategy.py b/crawl4ai/chunking_strategy.py
index f46cb667c..2973ceab7 100644
--- a/crawl4ai/chunking_strategy.py
+++ b/crawl4ai/chunking_strategy.py
@@ -86,7 +86,7 @@ def chunk(self, text: str) -> list:
         sentences = sent_tokenize(text)
         sens = [sent.strip() for sent in sentences]
 
-        return list(set(sens))
+        return list(dict.fromkeys(sens))
 
 
 # Topic-based segmentation using TextTiling