diff --git a/pkgs/build-support/src-only/default.nix b/pkgs/build-support/src-only/default.nix
index b4e373cd058e..520753e37460 100644
--- a/pkgs/build-support/src-only/default.nix
+++ b/pkgs/build-support/src-only/default.nix
@@ -1,4 +1,4 @@
-{ stdenv }@orig:
+{ stdenv }:
 # srcOnly is a utility builder that only fetches and unpacks the given `src`,
 # maybe pathings it in the process with the optional `patches` and
 # `buildInputs` attributes.