diff --git a/docs/source/conf.py b/docs/source/conf.py
index 027b98403a2cdc04fde86d4e2e1fa39719e2ecfd..9af02837a4558b11ce3cdff96c74516c8daf1df8 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -23,8 +23,6 @@ extensions = [
     'nbsphinx'
 ]
 
-source_suffix = [".rst", ".md"]
-
 autodoc_mock_imports = ['numpy','scipy','xarray','pandas','netCDF4','osselyze','osselyze.utils']
 
 napoleon_google_docstring = True