diff --git a/mrblib/symbol.rb b/mrblib/symbol.rb
index 827e2c1e0..17d752906 100644
--- a/mrblib/symbol.rb
+++ b/mrblib/symbol.rb
@@ -1,7 +1,8 @@
 class Symbol
   def to_proc
+    mid = self
     ->(obj,*args,**opts,&block) do
-      obj.__send__(self, *args, **opts, &block)
+      obj.__send__(mid, *args, **opts, &block)
     end
   end
 end