diff --git a/README b/README
index 6946f0e..c16aa2b 100644
--- a/README
+++ b/README
@@ -42,6 +42,8 @@ use morituri installed or uninstalled.
   - checkout:
     git clone git://github.com/thomasvs/morituri.git
     cd morituri
+    git submodule init
+    git submodule update
     ./autogen.sh
 
 - building: