diff --git a/pkgs/build-support/trivial-builders.nix b/pkgs/build-support/trivial-builders.nix
index d6e49a93c58..57c439fc0eb 100644
--- a/pkgs/build-support/trivial-builders.nix
+++ b/pkgs/build-support/trivial-builders.nix
@@ -315,10 +315,10 @@ rec {
       allowSubstitutes = false;
     }
     ''
-    n=$out/bin/$name
-    mkdir -p "$(dirname "$n")"
-    mv "$codePath" code.c
-    $CC -x c code.c -o "$n"
+      n=$out/bin/$name
+      mkdir -p "$(dirname "$n")"
+      mv "$codePath" code.c
+      $CC -x c code.c -o "$n"
     '';