diff --git a/impls/ruby.2/step9_try.rb b/impls/ruby.2/step9_try.rb
index 9cfa409c89..68e93c0180 100644
--- a/impls/ruby.2/step9_try.rb
+++ b/impls/ruby.2/step9_try.rb
@@ -20,7 +20,7 @@ def boot_repl!
       Types::Symbol.for("eval"),
 
       Types::Builtin.new("eval") do |mal|
-        Mal.EVAL(mal.first, @repl_env)
+        Mal.EVAL(mal, @repl_env)
       end
     )