1 files changed, 1 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb
index 071660e7cf..8bc15a213b 100755
--- a/activerecord/lib/active_record/associations.rb
+++ b/activerecord/lib/active_record/associations.rb
@@ -676,7 +676,7 @@ module ActiveRecord
             end
           end
 
-          return association.compact
+          return association.uniq.compact
         end
 
         def extract_record(table_name, row)