diff --git a/pythainlp/transliterate/thai2rom.py b/pythainlp/transliterate/thai2rom.py
index 14ce6ebc5..7ddf176f1 100644
--- a/pythainlp/transliterate/thai2rom.py
+++ b/pythainlp/transliterate/thai2rom.py
@@ -423,8 +423,6 @@ def forward(
             else:
                 decoder_input = topi.detach()
 
-            decoder_input = topi.detach()
-
             if inference and decoder_input == end_token:
                 return outputs[:di]