diff --git a/kernel/scheduler/scheduler.cpp b/kernel/scheduler/scheduler.cpp
index 686f87a..8d37c3d 100644
--- a/kernel/scheduler/scheduler.cpp
+++ b/kernel/scheduler/scheduler.cpp
@@ -122,7 +122,8 @@ void yield(void) {
 
     if (next == cur) return;  // only one task, nothing to do
 
-    cur->state = TASK_STATE_READY;
+    if (cur->state != TASK_STATE_TERMINATED)
+        cur->state = TASK_STATE_READY;
     next->state = TASK_STATE_RUNNING;
     g_current = next;