diff --git a/pkgs/tools/system/chase/default.nix b/pkgs/tools/system/chase/default.nix
index 8a4351707168..15d2b16faee6 100644
--- a/pkgs/tools/system/chase/default.nix
+++ b/pkgs/tools/system/chase/default.nix
@@ -1,11 +1,12 @@
 { stdenv, fetchurl ,pkgconfig, libatomic_ops , boehmgc }:
 
 stdenv.mkDerivation rec {
-  name = "chase-0.5.2";
+  name = "chase-${version}";
+  version = "0.5.2";
 
   buildInputs = [ pkgconfig libatomic_ops boehmgc ] ;
   src = fetchurl {
-    url = "mirror://debian/pool/main/c/chase/${name}.orig.tar.gz";
+    url = "mirror://debian/pool/main/c/chase/chase_${version}.orig.tar.gz";
     sha256 = "68d95c2d4dc45553b75790fcea4413b7204a2618dff148116ca9bdb0310d737f";
   };