1 files changed, 1 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb
index cbdb145078..fc186f806c 100755
--- a/activerecord/lib/active_record/associations.rb
+++ b/activerecord/lib/active_record/associations.rb
@@ -940,7 +940,7 @@ module ActiveRecord
           )
         end
 
-        add_single_associated_save_callbacks(reflection.name) unless options[:validate] == false
+        add_single_associated_save_callbacks(reflection.name) if options[:validate] == true
 
         configure_dependency_for_belongs_to(reflection)
       end