diff --git a/test/queries_test.rb b/test/queries_test.rb
index 43e5d2742..bdb39a1ee 100644
--- a/test/queries_test.rb
+++ b/test/queries_test.rb
@@ -36,6 +36,7 @@ def with_filter_data
       yield
     ensure
       PgHero.filter_data = previous_value
+      database.remove_instance_variable(:@filter_data)
     end
   end
 end