diff --git a/pkgs/development/libraries/aften/default.nix b/pkgs/development/libraries/aften/default.nix
index a1d4c225909..d50cbe26e56 100644
--- a/pkgs/development/libraries/aften/default.nix
+++ b/pkgs/development/libraries/aften/default.nix
@@ -1,21 +1,21 @@
 { stdenv, fetchurl, cmake }:
 
 stdenv.mkDerivation rec {
-	pname = "aften";
-	version = "0.0.8";
-	src = fetchurl {
-		url = "mirror://sourceforge/aften/${pname}-${version}.tar.bz2";
-		sha256 = "02hc5x9vkgng1v9bzvza9985ifrjd7fjr7nlpvazp4mv6dr89k47";
-	};
+  pname = "aften";
+  version = "0.0.8";
+  src = fetchurl {
+    url = "mirror://sourceforge/aften/${pname}-${version}.tar.bz2";
+    sha256 = "02hc5x9vkgng1v9bzvza9985ifrjd7fjr7nlpvazp4mv6dr89k47";
+  };
 
-	nativeBuildInputs = [ cmake ];
+  nativeBuildInputs = [ cmake ];
 
-	cmakeFlags = [ "-DSHARED=ON" ];
+  cmakeFlags = [ "-DSHARED=ON" ];
 
-	meta = {
-		description = "An audio encoder which generates compressed audio streams based on ATSC A/52 specification";
-		homepage = "http://aften.sourceforge.net/";
-		license = stdenv.lib.licenses.lgpl2;
-		platforms = [ "i686-linux" "x86_64-linux" "x86_64-darwin" ];
-	};
+  meta = {
+    description = "An audio encoder which generates compressed audio streams based on ATSC A/52 specification";
+    homepage = "http://aften.sourceforge.net/";
+    license = stdenv.lib.licenses.lgpl2;
+    platforms = [ "i686-linux" "x86_64-linux" "x86_64-darwin" ];
+  };
 }