diff --git a/test/asynctest.c b/test/asynctest.c
index 39600bbfb0..a441d09ad4 100644
--- a/test/asynctest.c
+++ b/test/asynctest.c
@@ -411,6 +411,7 @@ static int test_ASYNC_start_job_ex(void)
     ret = 1;
  err:
     ASYNC_WAIT_CTX_free(waitctx);
+    ASYNC_cleanup_thread();
     OSSL_LIB_CTX_free(libctx);
     return ret;
 }