1 files changed, 3 insertions, 2 deletions
diff --git a/nixpkgs/pkgs/development/tools/build-managers/jam/default.nix b/nixpkgs/pkgs/development/tools/build-managers/jam/default.nix
index 859497345ff6..8db882711fc2 100644
--- a/nixpkgs/pkgs/development/tools/build-managers/jam/default.nix
+++ b/nixpkgs/pkgs/development/tools/build-managers/jam/default.nix
@@ -1,10 +1,11 @@
 { lib, stdenv, fetchurl, bison }:
 
 stdenv.mkDerivation rec {
-  name = "jam-2.6.1";
+  pname = "jam";
+  version = "2.6.1";
 
   src = fetchurl {
-    url = "https://swarm.workshop.perforce.com/projects/perforce_software-jam/download/main/${name}.tar";
+    url = "https://swarm.workshop.perforce.com/projects/perforce_software-jam/download/main/${pname}-${version}.tar";
     sha256 = "19xkvkpycxfsncxvin6yqrql3x3z9ypc1j8kzls5k659q4kv5rmc";
   };