diff --git a/README.md b/README.md
index 24e4446..a777ac5 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,7 @@ When nim-leopard is installed with `nimble install leopard`, or as a dependency
 
 If the nim-leopard repo is cloned directly, then before running `nimble develop` or `nimble install` in the root of the clone, it's necessary to init the submodule
 ```text
-$ git submodule update --init
+$ git submodule update --init --recursive
 ```
 
 #### Build