diff --git a/pkgs/development/libraries/a52dec/default.nix b/pkgs/development/libraries/a52dec/default.nix
index 8ed47b91e5de..7cbb36994013 100644
--- a/pkgs/development/libraries/a52dec/default.nix
+++ b/pkgs/development/libraries/a52dec/default.nix
@@ -1,11 +1,12 @@
 {stdenv, fetchurl}:
 
 stdenv.mkDerivation rec {
-  name = "a52dec-0.7.4p4";
+  pname = "a52dec";
+  version = "0.7.4";
 
   src = fetchurl {
-    url = "${meta.homepage}/files/a52dec-0.7.4.tar.gz";
-    sha256 = "0czccp4fcpf2ykp16xcrzdfmnircz1ynhls334q374xknd5747d2";
+    url = "${meta.homepage}/files/${pname}-${version}.tar.gz";
+    sha256 = "oh1ySrOzkzMwGUNTaH34LEdbXfuZdRPu9MJd5shl7DM=";
   };
 
   configureFlags = [
@@ -18,10 +19,10 @@ stdenv.mkDerivation rec {
   # but it's better to disable tests than loose ASLR on i686
   doCheck = !stdenv.isi686;
 
-  meta = {
+  meta = with stdenv.lib; {
     description = "ATSC A/52 stream decoder";
-    homepage = "http://liba52.sourceforge.net/";
-    platforms = stdenv.lib.platforms.unix;
-    license = stdenv.lib.licenses.gpl2;
+    homepage = "https://liba52.sourceforge.net/";
+    platforms = platforms.unix;
+    license = licenses.gpl2Plus;
   };
 }