diff --git a/doc/manual/command-ref/nix-store.xml b/doc/manual/command-ref/nix-store.xml
index fb017b741..19c99841a 100644
--- a/doc/manual/command-ref/nix-store.xml
+++ b/doc/manual/command-ref/nix-store.xml
@@ -234,7 +234,7 @@ linkend="sec-nix-build">nix-build does.
To test whether a previously-built derivation is deterministic:
-$ nix-build -r '<nixpkgs>' -A hello --check -K
+$ nix-build '<nixpkgs>' -A hello --check -K