diff --git a/architecture.md b/architecture.md
index 2eb30e43..c39ccf10 100644
--- a/architecture.md
+++ b/architecture.md
@@ -72,6 +72,8 @@ icons and buttons, a terminal or another web application.
 
 ## Code Architecture
 
+The ``radicale`` package offers 8 modules.
+
 `__main__`
 : The main module provides a simple function called run. Its main work is to
   read the configuration from the configuration file and from the options given