diff --git a/pkgs/by-name/mo/mousai/package.nix b/pkgs/by-name/mo/mousai/package.nix
index b67ef0d86452d..7bdb7dd7ec2ca 100644
--- a/pkgs/by-name/mo/mousai/package.nix
+++ b/pkgs/by-name/mo/mousai/package.nix
@@ -32,8 +32,7 @@ stdenv.mkDerivation rec {
   };
 
   cargoDeps = rustPlatform.fetchCargoTarball {
-    inherit src;
-    name = "${pname}-${version}";
+    inherit pname version src;
     hash = "sha256-FjnRI1vHA9YF/Uw2+hDtMJmeJVa5RcxaYoG4XgXa9Ds=";
   };