diff --git a/src/gc/stm_tests.ml b/src/gc/stm_tests.ml
index 5ce2629f..e008d24c 100644
--- a/src/gc/stm_tests.ml
+++ b/src/gc/stm_tests.ml
@@ -4,29 +4,29 @@ open QCheck
 
 module GC_STM_seq = STM_sequential.Make(GCConf)
 module GC_STM_dom = STM_domain.Make(GCConf)
-(*
+
 let agree_prop cs = match Util.protect GC_STM_seq.agree_prop cs with
   | Ok r -> r
   | Error Stack_overflow -> true (* Stack_overflow is accepted behaviour *)
   | Error e -> raise e
-*)
+
 (* Run seq. property in a child domain to stresstest parent-child GC *)
 let agree_child_prop cs = match Domain.spawn (fun () -> Util.protect GC_STM_seq.agree_prop cs) |> Domain.join with
   | Ok r -> r
   | Error Stack_overflow -> true (* Stack_overflow is accepted behaviour *)
   | Error e -> raise e
-(*
+
 let agree_test ~count ~name =
   Test.make ~name ~count (GC_STM_seq.arb_cmds GCConf.init_state) agree_prop
-*)
+
 let agree_child_test ~count ~name =
   Test.make ~name ~count (GC_STM_seq.arb_cmds GCConf.init_state) agree_child_prop
 
 let _ =
   Printf.printf "Page size: %i\n" (Pagesize.get ());
   QCheck_base_runner.run_tests_main [
-  (*agree_test                    ~count:1000 ~name:"STM Gc test sequential";*)
+    agree_test                    ~count:1000 ~name:"STM Gc test sequential";
     agree_child_test              ~count:1000 ~name:"STM Gc test sequential in child domain";
-  (*GC_STM_dom.neg_agree_test_par ~count:1000 ~name:"STM Gc test parallel";*)
+    GC_STM_dom.neg_agree_test_par ~count:1000 ~name:"STM Gc test parallel";
     GC_STM_dom.stress_test_par    ~count:1000 ~name:"STM Gc stress test parallel";
   ]