diff --git a/pkgs/development/interpreters/ruby/build-ruby-gem/nix-bundle-install.rb b/pkgs/development/interpreters/ruby/build-ruby-gem/nix-bundle-install.rb
index 647b83b52c3..48ab5270c22 100644
--- a/pkgs/development/interpreters/ruby/build-ruby-gem/nix-bundle-install.rb
+++ b/pkgs/development/interpreters/ruby/build-ruby-gem/nix-bundle-install.rb
@@ -107,7 +107,6 @@ if spec.executables.any?
   spec.executables.each do |exe|
     wrapper = File.join(bin_dir, exe)
     File.open(wrapper, "w") do |f|
-      stub = generate_stub(spec.name, exe)
       f.write(<<-EOF)
 #!#{ruby}
 #