diff --git a/pkgs/development/libraries/librsync/0.9.nix b/pkgs/development/libraries/librsync/0.9.nix
index 76daf7d748bf..d3dd293f975b 100644
--- a/pkgs/development/libraries/librsync/0.9.nix
+++ b/pkgs/development/libraries/librsync/0.9.nix
@@ -1,13 +1,15 @@
-{stdenv, fetchurl}:
+{ stdenv, fetchurl }:
 
 stdenv.mkDerivation {
   name = "librsync-0.9.7";
-  
+
   src = fetchurl {
     url = mirror://sourceforge/librsync/librsync-0.9.7.tar.gz;
     sha256 = "1mj1pj99mgf1a59q9f2mxjli2fzxpnf55233pc1klxk2arhf8cv6";
   };
 
+  hardening_format = false;
+
   configureFlags = if stdenv.isCygwin then "--enable-static" else "--enable-shared";
 
   crossAttrs = {