diff --git a/src/core/iomgr/pollset_posix.c b/src/core/iomgr/pollset_posix.c
index 0151550a818..0bb722e2b12 100644
--- a/src/core/iomgr/pollset_posix.c
+++ b/src/core/iomgr/pollset_posix.c
@@ -66,7 +66,7 @@ static void backup_poller(void *p) {
     gpr_timespec next_poll = gpr_time_add(last_poll, delta);
     grpc_pollset_work(&g_backup_pollset, gpr_time_add(gpr_now(), gpr_time_from_seconds(1)));
     gpr_mu_unlock(&g_backup_pollset.mu);
-    /*gpr_sleep_until(next_poll);*/
+    gpr_sleep_until(next_poll);
     gpr_mu_lock(&g_backup_pollset.mu);
     last_poll = next_poll;
   }