diff --git a/gpui/src/executor.rs b/gpui/src/executor.rs
index 75a36f808836f8e5d3b659948918459c99e17a95..715d6f2874a7a28d9ade06aa899480731535d467 100644
--- a/gpui/src/executor.rs
+++ b/gpui/src/executor.rs
@@ -51,7 +51,9 @@ impl Deterministic {
         let (runnable, task) = async_task::spawn_local(future, move |runnable| {
             let mut runnables = runnables.lock();
             runnables.0.push(runnable);
-            runnables.1.as_ref().unwrap().send(()).ok();
+            if let Some(wake_tx) = runnables.1.as_ref() {
+                wake_tx.send(()).ok();
+            }
         });
         runnable.schedule();
         task
@@ -66,7 +68,9 @@ impl Deterministic {
         let (runnable, task) = async_task::spawn(future, move |runnable| {
             let mut runnables = runnables.lock();
             runnables.0.push(runnable);
-            runnables.1.as_ref().unwrap().send(()).ok();
+            if let Some(wake_tx) = runnables.1.as_ref() {
+                wake_tx.send(()).ok();
+            }
         });
         runnable.schedule();
         task