1 files changed, 1 insertions, 6 deletions
diff --git a/activerecord/lib/active_record/associations/join_dependency/join_association.rb b/activerecord/lib/active_record/associations/join_dependency/join_association.rb
index ea4856408d..0d7d28e458 100644
--- a/activerecord/lib/active_record/associations/join_dependency/join_association.rb
+++ b/activerecord/lib/active_record/associations/join_dependency/join_association.rb
@@ -55,12 +55,7 @@ module ActiveRecord
 
         def find_parent_in(other_join_dependency)
           other_join_dependency.join_parts.detect do |join_part|
-            case parent
-            when JoinBase
-              parent.active_record == join_part.active_record
-            else
-              parent == join_part
-            end
+            parent == join_part
           end
         end