diff --git a/python/ctranslate2/converters/transformers.py b/python/ctranslate2/converters/transformers.py
index d5f935f95..6d1ec8aad 100644
--- a/python/ctranslate2/converters/transformers.py
+++ b/python/ctranslate2/converters/transformers.py
@@ -20,7 +20,6 @@
 from ctranslate2.specs import (
     attention_spec,
     common_spec,
-    model_spec,
     transformer_spec,
     wav2vec2_spec,
     wav2vec2bert_spec,