diff --git a/pkgs/tools/security/ccrypt/default.nix b/pkgs/tools/security/ccrypt/default.nix
index e6a63a2f288..0afa9108689 100644
--- a/pkgs/tools/security/ccrypt/default.nix
+++ b/pkgs/tools/security/ccrypt/default.nix
@@ -10,6 +10,8 @@ stdenv.mkDerivation {
 
   nativeBuildInputs = [ perl ];
 
+  hardeningDisable = [ "format" ];
+
   meta = {
     homepage = http://ccrypt.sourceforge.net/;
     description = "Utility for encrypting and decrypting files and streams with AES-256";