diff --git a/src/aio.c b/src/aio.c
index cdfb5fded..4c0eb48db 100644
--- a/src/aio.c
+++ b/src/aio.c
@@ -127,9 +127,6 @@ static void iaio_finalizer(SEXP xptr) {
   nng_aio_free(xp->aio);
   if (xp->data != NULL)
     R_Free(xp->data);
-  // release linked list node if cb has already run
-  if (xp->cb != NULL && TAG((SEXP) xp->cb) == R_NilValue)
-    nano_ReleaseObject((SEXP) xp->cb);
   R_Free(xp);
 
 }
diff --git a/src/thread.c b/src/thread.c
index c3fe47e77..02f599e56 100644
--- a/src/thread.c
+++ b/src/thread.c
@@ -236,9 +236,8 @@ static void thread_disp_finalizer(SEXP xptr) {
   ncv->condition = -1;
   nng_cv_wake(cv);
   nng_mtx_unlock(mtx);
-  if (xp->tls != NULL) {
+  if (xp->tls != NULL)
     nng_tls_config_free(xp->tls);
-  }
   nng_thread_destroy(xp->thr);
   nng_url_free(xp->up);
   for (int i = 0; i < xp->n; i++) {
@@ -760,7 +759,7 @@ static void rnng_dispatch_thread(void *args) {
   for (R_xlen_t i = 0; i < n; i++)
     nng_close(sock[i]);
   fail:
-    nng_close(hsock);
+  nng_close(hsock);
 
 }