diff --git a/lib/wongi-engine/beta/join_node.rb b/lib/wongi-engine/beta/join_node.rb
index <HASH>..<HASH> 100644
--- a/lib/wongi-engine/beta/join_node.rb
+++ b/lib/wongi-engine/beta/join_node.rb
@@ -83,7 +83,7 @@ module Wongi
       def refresh_child child
         tmp = children
         self.children = [ child ]
-        alpha.wmes.uniq.each do |wme|
+        alpha.wmes.each do |wme|
           alpha_activate wme
         end
         self.children = tmp
Revert the quick fix of #4

This reverts commit ae<I>c<I>edd4a<I>d<I>ac5ae<I>b.