diff --git a/pkgs/development/compilers/squeak/default.nix b/pkgs/development/compilers/squeak/default.nix
index 8aa980b72e60..341b8155c417 100644
--- a/pkgs/development/compilers/squeak/default.nix
+++ b/pkgs/development/compilers/squeak/default.nix
@@ -27,6 +27,8 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
+  hardening_format = false;
+
   meta = with stdenv.lib; {
     description = "Smalltalk programming language and environment";
     longDescription = ''