diff --git a/docs/source/recipes/librispeech/conformer_ctc.rst b/docs/source/recipes/librispeech/conformer_ctc.rst
index 66d6a0de6..c3cc31fbc 100644
--- a/docs/source/recipes/librispeech/conformer_ctc.rst
+++ b/docs/source/recipes/librispeech/conformer_ctc.rst
@@ -342,7 +342,7 @@ Usage:
       
 The output is given below:
 
-.. code-block::
+.. code-block:: bash
 
   2021-09-26 12:44:31,033 INFO [decode.py:537] Decoding started
   2021-09-26 12:44:31,033 INFO [decode.py:538]