diff --git a/doc/build-helpers/testers.chapter.md b/doc/build-helpers/testers.chapter.md
index 5c1b704655cf2..4ad133d260b60 100644
--- a/doc/build-helpers/testers.chapter.md
+++ b/doc/build-helpers/testers.chapter.md
@@ -364,7 +364,7 @@ including `nativeBuildInputs` to specify dependencies available to the `script`.
 ```nix
 testers.runCommand {
   name = "access-the-internet";
-  command = ''
+  script = ''
     curl -o /dev/null https://example.com
     touch $out
   '';