diff --git a/src/taskstub.js.c b/src/taskstub.js.c
index 5fe2f08c..3c7f7cd7 100644
--- a/src/taskstub.js.c
+++ b/src/taskstub.js.c
@@ -253,6 +253,7 @@ static void _taskstub_cleanup(tf_taskstub_t* stub)
 static void _taskstub_finalizer(JSRuntime* runtime, JSValue value)
 {
 	tf_taskstub_t* stub = JS_GetOpaque(value, _classId);
+	stub->_object = JS_UNDEFINED;
 	JSContext* context = tf_task_get_context(stub->_owner);
 	if (!JS_IsUndefined(stub->_on_exit))
 	{
diff --git a/src/tests.c b/src/tests.c
index 44c825ae..897fcce1 100644
--- a/src/tests.c
+++ b/src/tests.c
@@ -606,9 +606,13 @@ static void _tf_test_run(const tf_test_options_t* options, const char* name, voi
 
 	if (!options->tests || specified)
 	{
-		printf("Running test %s.\n", name);
+#define GREEN "[\e[1;32m"
+#define MAGENTA "\e[1;35m"
+#define CYAN "\e[1;36m"
+#define RESET "\e[0m"
+		printf(CYAN "== running test " MAGENTA "%s" CYAN " ==\n" RESET, name);
 		test(options);
-		printf("[\e[1;32mpass\e[0m] %s\n", name);
+		printf("[" GREEN "pass" RESET "] %s\n", name);
 	}
 }