diff --git a/mkdocs/docs/setup/build.md b/mkdocs/docs/setup/build.md
index 232e930a..cf9c1ef4 100644
--- a/mkdocs/docs/setup/build.md
+++ b/mkdocs/docs/setup/build.md
@@ -50,6 +50,7 @@ Have git, g++ or clang, gmake, python installed.
 
 ```
 $ cd mergerfs
+$ buildtools/install-build-pkgs
 $ gmake
 $ gmake install # as root
 ```