diff --git a/docs/docs/integrations/document_loaders/youtube_transcript.ipynb b/docs/docs/integrations/document_loaders/youtube_transcript.ipynb
index 0e106f0110..86ee8d220e 100644
--- a/docs/docs/integrations/document_loaders/youtube_transcript.ipynb
+++ b/docs/docs/integrations/document_loaders/youtube_transcript.ipynb
@@ -99,7 +99,7 @@
     "\n",
     "Language param : It's a list of language codes in a descending priority, `en` by default.\n",
     "\n",
-    "translation param : It's a translate preference when the youtube does'nt have your select language, `en` by default."
+    "translation param : It's a translate preference, you can translate available transcript to your preferred language."
    ]
   },
   {
diff --git a/libs/langchain/langchain/document_loaders/youtube.py b/libs/langchain/langchain/document_loaders/youtube.py
index 54cd35af21..f91adff611 100644
--- a/libs/langchain/langchain/document_loaders/youtube.py
+++ b/libs/langchain/langchain/document_loaders/youtube.py
@@ -146,7 +146,7 @@ class YoutubeLoader(BaseLoader):
         video_id: str,
         add_video_info: bool = False,
         language: Union[str, Sequence[str]] = "en",
-        translation: str = "en",
+        translation: Optional[str] = None,
         continue_on_failure: bool = False,
     ):
         """Initialize with YouTube video ID."""
@@ -206,8 +206,10 @@ class YoutubeLoader(BaseLoader):
         try:
             transcript = transcript_list.find_transcript(self.language)
         except NoTranscriptFound:
-            en_transcript = transcript_list.find_transcript(["en"])
-            transcript = en_transcript.translate(self.translation)
+            transcript = transcript_list.find_transcript(["en"])
+
+        if self.translation is not None:
+            transcript = transcript.translate(self.translation)
 
         transcript_pieces = transcript.fetch()