diff --git a/pkgs/development/compilers/nasm/default.nix b/pkgs/development/compilers/nasm/default.nix
index 5a95c2dd044..0c22d790bc5 100644
--- a/pkgs/development/compilers/nasm/default.nix
+++ b/pkgs/development/compilers/nasm/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   name = "nasm-${version}";
-  version = "2.11.06";
+  version = "2.11.05";
   
   src = fetchurl {
     url = "http://www.nasm.us/pub/nasm/releasebuilds/${version}/${name}.tar.bz2";
-    sha256 = "0v1y1kx09nzmk8w4v79jxhn15fmi3g7l9nmgkn7ldjl1d5yxkdl7";
+    sha256 = "1sgspnascc0asmwlv3jm1mq4vzx653sa7vlg48z20pfybk7pnhaa";
   };
 
   meta = with stdenv.lib; {