diff --git a/src/nix/shell.md b/src/nix/shell.md
index 1668104b1..f36919575 100644
--- a/src/nix/shell.md
+++ b/src/nix/shell.md
@@ -26,7 +26,7 @@ R""(
 * Run multiple commands in a shell environment:
 
   ```console
-  # nix shell nixpkgs#gnumake --command sh --command "cd src && make"
+  # nix shell nixpkgs#gnumake --command sh -c "cd src && make"
   ```
 
 * Run GNU Hello in a chroot store: