diff --git a/test/validator_test.rb b/test/validator_test.rb
index 725c9bfd9..8772a8695 100644
--- a/test/validator_test.rb
+++ b/test/validator_test.rb
@@ -408,8 +408,6 @@ class Foo
       EOF
 
       manager.build do |env|
-        root = nil
-
         resolver = RBS::Resolver::TypeNameResolver.new(env)
         validator = RBS::Validator.new(env: env, resolver: resolver)