diff --git a/examples/speech_to_text/reference/tgt_lang.txt b/examples/speech_to_text/reference/tgt_lang.txt
index 6c438149..2c4c454f 100644
--- a/examples/speech_to_text/reference/tgt_lang.txt
+++ b/examples/speech_to_text/reference/tgt_lang.txt
@@ -1 +1 @@
-es
\ No newline at end of file
+en
\ No newline at end of file