diff --git a/mkdocs/docs/setup/build.md b/mkdocs/docs/setup/build.md
index cf9c1ef4..a7d670ce 100644
--- a/mkdocs/docs/setup/build.md
+++ b/mkdocs/docs/setup/build.md
@@ -52,7 +52,7 @@ Have git, g++ or clang, gmake, python installed.
 $ cd mergerfs
 $ buildtools/install-build-pkgs
 $ gmake
-$ gmake install # as root
+$ sudo gmake install # as root
 ```