diff --git a/pkgs/tools/typesetting/lowdown/default.nix b/pkgs/tools/typesetting/lowdown/default.nix
index 174052b9aecb..e45eda3326a1 100644
--- a/pkgs/tools/typesetting/lowdown/default.nix
+++ b/pkgs/tools/typesetting/lowdown/default.nix
@@ -16,8 +16,7 @@ stdenv.mkDerivation rec {
 
   preConfigure = lib.optionalString (stdenv.isDarwin && stdenv.isAarch64) ''
     echo 'HAVE_SANDBOX_INIT=0' > configure.local
-  ''
-    "echo 'HAVE_SANDBOX_INIT=0' > configure.local";
+  '';
 
   configurePhase = ''
     runHook preConfigure
@@ -39,7 +38,7 @@ stdenv.mkDerivation rec {
   installCheckPhase = ''
     runHook preInstallCheck
     echo '# TEST' > test.md
-    lowdown test.md
+    $out/bin/lowdown test.md
     runHook postInstallCheck
   '';