diff --git a/firmware/thread.c b/firmware/thread.c
index db5d6c3d2c..7b9982be01 100644
--- a/firmware/thread.c
+++ b/firmware/thread.c
@@ -2387,6 +2387,7 @@ void thread_thaw(struct thread_entry *thread)
         }
 
         UNLOCK_THREAD_SET_STATE(thread, STATE_RUNNING);
+        set_irq_level(oldlevel);
         return;
     }