diff --git a/docs/installation.md b/docs/installation.md
index 29048bc45..6d6482ba4 100644
--- a/docs/installation.md
+++ b/docs/installation.md
@@ -15,7 +15,7 @@ installed):
 	  - `cmake`: required for building protobuf
       - `git-lfs`: The Git extension for [Large File Support](https://git-lfs.github.com/) (required for EF tests submodule).
    6. If you haven't already, clone the repository with submodules: `git clone --recursive https://github.com/sigp/lighthouse`.
-    Alternatively, run `git submodule init` in a repository which was cloned without submodules.
+    Alternatively, run `git submodule init; git submodule update` in a repository which was cloned without submodules.
    7. Change directory to the root of the repository.
    8. Run the test by using command `cargo test --all --release`. By running, it will pass all the required test cases.
         If you are doing it for the first time, then you can grab a coffee in the meantime. Usually, it takes time