diff --git a/docs/contributing/build-vyos.rst b/docs/contributing/build-vyos.rst
index 623cba78..3226def6 100644
--- a/docs/contributing/build-vyos.rst
+++ b/docs/contributing/build-vyos.rst
@@ -702,7 +702,7 @@ needs. We first need to clone the repository from GitHub.
 
 .. code-block:: none
 
-  $ git clone https://github.com/vyos/vyos-1x
+  $ git clone --recurse-submodules https://github.com/vyos/vyos-1x
 
 Build
 =====