diff --git a/README.md b/README.md
index cf3684d2..0ce7d09e 100644
--- a/README.md
+++ b/README.md
@@ -55,8 +55,9 @@ You can also find instructions here in [README.release.md](./post_build/README.r
 
  Clone the repo and its submodules **recursively**
  ```shell
- git clone --recurse-submodules https://github.com/otavepto/gbe_fork.git
+ git clone --recurse-submodules -j8 https://github.com/otavepto/gbe_fork.git
  ```
+ The switch `-j8` is optional, it allows Git to fetch up to 8 submodules
 
  It is adviseable to always checkout submodules every now and then, to make sure they're up to date
  ```shell