diff --git a/doc/extending/plugin_api.rst b/doc/extending/plugin_api.rst
index a96381405..46ee7fe12 100644
--- a/doc/extending/plugin_api.rst
+++ b/doc/extending/plugin_api.rst
@@ -41,7 +41,7 @@ Then, you need to register this application using the provided
 API. Just copy/paste the following example into the :file:`__init__.py` file
 of the future extension::
 
-  from modoboa.extensions import ModoExtension, exts_pool
+  from modoboa.core.extensions import ModoExtension, exts_pool
   
   class MyExtension(ModoExtension):
       name = "myext"