diff --git a/expression-ruby/tmp.rb b/expression-ruby/tmp.rb
deleted file mode 100644
index c02d097..0000000
--- a/expression-ruby/tmp.rb
+++ /dev/null
@@ -1,19 +0,0 @@
-require_relative 'lib/lago-expression'
-require 'benchmark/ips'
-
-parsed = ExpressionParser.parse("concat(event.properties.foo, '-', event.code)")
-event = Event.new("code", 1234, {"foo" => "bar"})
-
-evaluated = parsed.evaluate(event)
-puts "#{evaluated} is a #{evaluated.class}"
-
-hash = {"foo" => "bar"}
-code = "code"
-
-Benchmark.ips do |x|
-  x.report("regular") { [hash['foo'], '-', code].join('') }
-
-  x.report("rust") { parsed.evaluate(event) }
-  # Compare the iterations per second of the various reports!
-  x.compare!
-end