diff --git a/activerecord/lib/active_record/reflection.rb b/activerecord/lib/active_record/reflection.rb
index 43f573f19399318731451d2c5b05a9f673fafd4d..0eff30f1db30372b974495c8d9a947da7cfe2765 100644
--- a/activerecord/lib/active_record/reflection.rb
+++ b/activerecord/lib/active_record/reflection.rb
@@ -765,7 +765,6 @@ def collect_join_chain
       # This is for clearing cache on the reflection. Useful for tests that need to compare
       # SQL queries on associations.
       def clear_association_scope_cache # :nodoc:
-        @chain = nil
         delegate_reflection.clear_association_scope_cache
         source_reflection.clear_association_scope_cache
         through_reflection.clear_association_scope_cache