diff --git a/pkgs/by-name/cr/cryptsetup/package.nix b/pkgs/by-name/cr/cryptsetup/package.nix
index 5c5ce5ed5e8c..08869add459e 100644
--- a/pkgs/by-name/cr/cryptsetup/package.nix
+++ b/pkgs/by-name/cr/cryptsetup/package.nix
@@ -56,7 +56,9 @@ stdenv.mkDerivation (finalAttrs: {
     substituteInPlace tests/unit-utils-io.c --replace "| O_DIRECT" ""
   '';
 
-  NIX_LDFLAGS = lib.optionalString (stdenv.cc.isGNU && !stdenv.hostPlatform.isStatic) "-lgcc_s";
+  env = lib.optionalAttrs (stdenv.cc.isGNU && !stdenv.hostPlatform.isStatic) {
+    NIX_LDFLAGS = "-lgcc_s";
+  };
 
   configureFlags = [
     "--with-crypto_backend=openssl"