diff --git a/pkgs/development/compilers/xa/xa.nix b/pkgs/development/compilers/xa/xa.nix
index 9f4d45ba4977..52be6de0812d 100644
--- a/pkgs/development/compilers/xa/xa.nix
+++ b/pkgs/development/compilers/xa/xa.nix
@@ -4,14 +4,14 @@
 , perl
 }:
 
-stdenv.mkDerivation (self: {
+stdenv.mkDerivation (finalAttrs: {
   pname = "xa";
   version = "2.3.14";
 
   src = fetchurl {
     urls = [
-      "https://www.floodgap.com/retrotech/xa/dists/xa-${self.version}.tar.gz"
-      "https://www.floodgap.com/retrotech/xa/dists/unsupported/xa-${self.version}.tar.gz"
+      "https://www.floodgap.com/retrotech/xa/dists/xa-${finalAttrs.version}.tar.gz"
+      "https://www.floodgap.com/retrotech/xa/dists/unsupported/xa-${finalAttrs.version}.tar.gz"
     ];
     hash = "sha256-G5u6vdvY07lBC4UuUKEo7qQeaBM55vdsPoB2+lQg8C4=";
   };