diff --git a/lib/isc/thread.c b/lib/isc/thread.c
index aca7c38332..b0e0875aca 100644
--- a/lib/isc/thread.c
+++ b/lib/isc/thread.c
@@ -61,7 +61,7 @@ thread_wrap(isc_threadfunc_t func, void *arg) {
 		.func = func,
 		.arg = arg,
 	};
-
+	__tsan_release(wrap);
 	return (wrap);
 }