diff --git a/pkgs/development/compilers/ghc/head.nix b/pkgs/development/compilers/ghc/head.nix
index ec9ff56c4585..a71b08cd39fc 100644
--- a/pkgs/development/compilers/ghc/head.nix
+++ b/pkgs/development/compilers/ghc/head.nix
@@ -167,10 +167,10 @@ stdenv.mkDerivation rec {
   # that in turn causes GHCi to abort
   stripDebugFlags = [ "-S" ] ++ stdenv.lib.optional (!targetPlatform.isDarwin) "--keep-file-symbols";
 
-  hardeningDisable = [ "format" ];
-
   checkTarget = "test";
 
+  hardeningDisable = [ "format" ];
+
   postInstall = ''
     for bin in "$out"/lib/${name}/bin/*; do
       isELF "$bin" || continue