diff --git a/mono/metadata/gc.c b/mono/metadata/gc.c
index deca78d4e4ec..6eca2b96528c 100644
--- a/mono/metadata/gc.c
+++ b/mono/metadata/gc.c
@@ -864,6 +864,7 @@ mono_gc_cleanup (void)
 
 				mono_thread_join (GUINT_TO_POINTER (gc_thread->tid));
 			}
+			g_assert (finalizer_thread_exited);
 		}
 		gc_thread = NULL;
 		mono_gc_base_cleanup ();
@@ -871,6 +872,7 @@ mono_gc_cleanup (void)
 
 	mono_reference_queue_cleanup ();
 
+	// fprintf (stderr, "destory finalizer and reference queue mutex\n");
 	mono_coop_mutex_destroy (&finalizer_mutex);
 	mono_coop_mutex_destroy (&reference_queue_mutex);
 }
diff --git a/mono/tests/test-driver b/mono/tests/test-driver
index a10323bb177a..86fcf423c45b 100755
--- a/mono/tests/test-driver
+++ b/mono/tests/test-driver
@@ -47,6 +47,9 @@ my $cpid = fork ();
 if (!defined ($cpid)) {
 	$res = system("$interpreter @ARGV $test_binary 2>$stderr 1>$stdout");
 } elsif ($cpid == 0) {
+	    print "that's it >>>>>>>>\n";
+	    print "$interpreter @ARGV $test_binary 2>$stderr 1>$stdout\n";
+	    print "\n<<<<<<<<<\n";
 	exec ("$interpreter @ARGV $test_binary 2>$stderr 1>$stdout") || die "Cannot exec: $!";
 } else {
 	# in the parent, setup the alarm