diff --git a/src/jl_uv.c b/src/jl_uv.c
index 420fd0cfd42a7..32adf9f1ba8f2 100644
--- a/src/jl_uv.c
+++ b/src/jl_uv.c
@@ -180,7 +180,7 @@ static void jl_uv_closeHandle(uv_handle_t *handle)
         return;
     }
     if (handle == (uv_handle_t*)&wait_empty_worker)
-        handle->type = 0;
+        handle->type = UV_UNKNOWN_HANDLE;
     else if (handle == (uv_handle_t*)&signal_async)
         return;
     else
diff --git a/src/scheduler.c b/src/scheduler.c
index da8240c68dd07..91740043828fd 100644
--- a/src/scheduler.c
+++ b/src/scheduler.c
@@ -272,9 +272,7 @@ static int wake_thread(int16_t tid) JL_NOTSAFEPOINT
             int wasrunning = jl_atomic_fetch_add_relaxed(&nrunning, 1); // increment in-flight wakeup count
             assert(wasrunning); (void)wasrunning;
             JL_PROBE_RT_SLEEP_CHECK_WAKE(ptls2, state);
-            uv_mutex_lock(&ptls2->sleep_lock);
             uv_cond_signal(&ptls2->wake_signal);
-            uv_mutex_unlock(&ptls2->sleep_lock);
             return 1;
         }
     }
@@ -587,9 +585,7 @@ void scheduler_delete_thread(jl_ptls_t ptls) JL_NOTSAFEPOINT
             jl_ptls_t ptls2 = jl_atomic_load_relaxed(&jl_all_tls_states)[0];
             // This was the last running thread, and there is no thread with !may_sleep
             // so make sure tid 0 is notified to check wait_empty
-            uv_mutex_lock(&ptls2->sleep_lock);
-            uv_cond_wait(&ptls2->wake_signal, &ptls->sleep_lock);
-            uv_mutex_unlock(&ptls2->sleep_lock);
+            uv_cond_signal(&ptls2->wake_signal);
         }
     }
     jl_fence();