diff --git a/docs/md_v2/core/quickstart.md b/docs/md_v2/core/quickstart.md
index 83cb6cef..7f245ca6 100644
--- a/docs/md_v2/core/quickstart.md
+++ b/docs/md_v2/core/quickstart.md
@@ -97,23 +97,28 @@ By default, Crawl4AI automatically generates Markdown from each crawled page. Ho
 ### Example: Using a Filter with `DefaultMarkdownGenerator`
 
 ```python
-from crawl4ai import AsyncWebCrawler, CrawlerRunConfig
+import asyncio
+from crawl4ai import AsyncWebCrawler, CrawlerRunConfig, CacheMode
 from crawl4ai.content_filter_strategy import PruningContentFilter
 from crawl4ai.markdown_generation_strategy import DefaultMarkdownGenerator
 
-md_generator = DefaultMarkdownGenerator(
-    content_filter=PruningContentFilter(threshold=0.4, threshold_type="fixed")
-)
+async def main():
+    md_generator = DefaultMarkdownGenerator(
+        content_filter=PruningContentFilter(threshold=0.4, threshold_type="fixed")
+    )
 
-config = CrawlerRunConfig(
-    cache_mode=CacheMode.BYPASS,
-    markdown_generator=md_generator
-)
+    config = CrawlerRunConfig(
+        cache_mode=CacheMode.BYPASS,
+        markdown_generator=md_generator
+    )
+
+    async with AsyncWebCrawler() as crawler:
+        result = await crawler.arun("https://news.ycombinator.com", config=config)
+        print("Raw Markdown length:", result.markdown.raw_markdown)
+        print("Fit Markdown length:", result.markdown.fit_markdown)
 
-async with AsyncWebCrawler() as crawler:
-    result = await crawler.arun("https://news.ycombinator.com", config=config)
-    print("Raw Markdown length:", len(result.markdown.raw_markdown))
-    print("Fit Markdown length:", len(result.markdown.fit_markdown))
+if __name__ == "__main__":
+    asyncio.run(main())
 ```
 
 **Note**: If you do **not** specify a content filter or markdown generator, you’ll typically see only the raw Markdown. `PruningContentFilter` may adds around `50ms` in processing time. We’ll dive deeper into these strategies in a dedicated **Markdown Generation** tutorial.
@@ -462,4 +467,4 @@ If you’re ready for more, check out:
 - **Deployment**: Explore ephemeral testing in Docker or plan for the upcoming stable Docker release.  
 - **Browser Management**: Delve into user simulation, stealth modes, and concurrency best practices.  
 
-Crawl4AI is a powerful, flexible tool. Enjoy building out your scrapers, data pipelines, or AI-driven extraction flows. Happy crawling!
\ No newline at end of file
+Crawl4AI is a powerful, flexible tool. Enjoy building out your scrapers, data pipelines, or AI-driven extraction flows. Happy crawling!