diff --git a/qemu-coroutine-lock.c b/qemu-coroutine-lock.c
index 26ad76b..0d7a03f 100644
--- a/qemu-coroutine-lock.c
+++ b/qemu-coroutine-lock.c
@@ -59,6 +59,16 @@ void coroutine_fn qemu_co_queue_wait(CoQueue *queue)
     QTAILQ_INSERT_TAIL(&queue->entries, self, co_queue_next);
     qemu_coroutine_yield();
     assert(qemu_in_coroutine());
+    {
+        Coroutine *co;
+
+        QTAILQ_FOREACH(co, &queue->entries, co_queue_next) {
+            assert(co != self);
+        }
+        QTAILQ_FOREACH(co, &unlock_bh_queue, co_queue_next) {
+            assert(co != self);
+        }
+    }
 }
 
 void coroutine_fn qemu_co_queue_wait_insert_head(CoQueue *queue)