diff --git a/activerecord/lib/active_record/reflection.rb b/activerecord/lib/active_record/reflection.rb
index 82d728e2e9..2eefda1ca9 100644
--- a/activerecord/lib/active_record/reflection.rb
+++ b/activerecord/lib/active_record/reflection.rb
@@ -206,7 +206,7 @@ def build_association(attributes, &block)
       end
 
       def table_name
-        @table_name ||= klass.table_name
+        klass.table_name
       end
 
       def quoted_table_name