1 files changed, 7 insertions, 1 deletions
diff --git a/lib/arel/algebra/predicates.rb b/lib/arel/algebra/predicates.rb
index 5e17cdd101..d789c1d8a2 100644
--- a/lib/arel/algebra/predicates.rb
+++ b/lib/arel/algebra/predicates.rb
@@ -145,7 +145,13 @@ module Arel
       end
     end
 
-    class Inequality  < Equality
+    class Inequality  < Binary
+      def ==(other)
+        Equality === other and
+          ((operand1 == other.operand1 and operand2 == other.operand2) or
+           (operand1 == other.operand2 and operand2 == other.operand1))
+      end
+      
       def complement
         Equality.new(operand1, operand2)
       end