diff --git a/spec/thread_safety.rb b/spec/thread_safety.rb
deleted file mode 100644
index e35fbd9..0000000
--- a/spec/thread_safety.rb
+++ /dev/null
@@ -1,45 +0,0 @@
-
-$LOAD_PATH.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
-require 'namae'
-
-name1_s = 'Foo Bar'
-name2_s = 'Baz'
-
-name1 = Namae.parse(name1_s).first
-r1 = [name1.given, name1.family]
-
-name2 = Namae.parse(name2_s).first
-r2 = [name2.given, name2.family]
-
-$issues = []
-
-def verify(str, expected)
-  name = Namae.parse(str).first
-  if name == nil
-    $issues << {error: 'Parser returned nil'}
-    return
-  end
-
-  result = [name.given, name.family]
-
-  if result != expected
-    $issues << {
-      name: str,
-      expected: expected,
-      result: result,
-    }
-  end
-end
-
-N = 10_000
-
-[[name1_s, r1], [name2_s, r2]].map do |str, expected|
-  Thread.new do
-    N.times do
-      verify(str, expected)
-    end
-  end
-end.each(&:join)
-
-require 'pp'
-pp $issues
diff --git a/spec/namae/threading_spec.rb b/spec/thread_safety_spec.rb
similarity index 100%
rename from spec/namae/threading_spec.rb
rename to spec/thread_safety_spec.rb