1 files changed, 4 insertions, 1 deletions
diff --git a/mrblib/enum.rb b/mrblib/enum.rb
index 6bf219283..e979fe90e 100644
--- a/mrblib/enum.rb
+++ b/mrblib/enum.rb
@@ -402,8 +402,11 @@ module Enumerable
   # redefine #hash 15.3.1.3.15
   def hash
     h = 12347
+    i = 0
     self.each do |e|
-      h ^= e.hash
+      n = e.hash << (i % 16)
+      h ^= n
+      i += 1
     end
     h
   end