diff --git a/docs/source/fastNLP.modules.decoder.CRF.rst b/docs/source/fastNLP.modules.decoder.crf.rst
similarity index 72%
rename from docs/source/fastNLP.modules.decoder.CRF.rst
rename to docs/source/fastNLP.modules.decoder.crf.rst
index fc643fef..6d5b0d5b 100644
--- a/docs/source/fastNLP.modules.decoder.CRF.rst
+++ b/docs/source/fastNLP.modules.decoder.crf.rst
@@ -1,7 +1,7 @@
 fastNLP.modules.decoder.CRF
 ===========================
 
-.. automodule:: fastNLP.modules.decoder.CRF
+.. automodule:: fastNLP.modules.decoder.crf
     :members:
     :undoc-members:
     :show-inheritance:
diff --git a/docs/source/fastNLP.modules.decoder.MLP.rst b/docs/source/fastNLP.modules.decoder.mlp.rst
similarity index 72%
rename from docs/source/fastNLP.modules.decoder.MLP.rst
rename to docs/source/fastNLP.modules.decoder.mlp.rst
index feb5c228..7d661ebf 100644
--- a/docs/source/fastNLP.modules.decoder.MLP.rst
+++ b/docs/source/fastNLP.modules.decoder.mlp.rst
@@ -1,7 +1,7 @@
 fastNLP.modules.decoder.MLP
 ===========================
 
-.. automodule:: fastNLP.modules.decoder.MLP
+.. automodule:: fastNLP.modules.decoder.mlp
     :members:
     :undoc-members:
     :show-inheritance:
diff --git a/docs/source/fastNLP.modules.decoder.rst b/docs/source/fastNLP.modules.decoder.rst
index 1c28740b..e42a9f39 100644
--- a/docs/source/fastNLP.modules.decoder.rst
+++ b/docs/source/fastNLP.modules.decoder.rst
@@ -12,7 +12,7 @@ fastNLP.modules.decoder
 .. toctree::
    :titlesonly:
 
-   fastNLP.modules.decoder.CRF
-   fastNLP.modules.decoder.MLP
+   fastNLP.modules.decoder.crf
+   fastNLP.modules.decoder.mlp
    fastNLP.modules.decoder.utils