diff --git a/uc.c b/uc.c
index c3cd6658..4640e5c6 100644
--- a/uc.c
+++ b/uc.c
@@ -305,6 +305,7 @@ uc_err uc_close(uc_engine *uc)
 
     object_unref(uc, OBJECT(uc->machine_state->accelerator));
     object_unref(uc, OBJECT(uc->machine_state));
+    object_unref(uc, OBJECT(uc->cpu));
     object_unref(uc, OBJECT(&uc->io_mem_notdirty));
     object_unref(uc, OBJECT(&uc->io_mem_unassigned));
     object_unref(uc, OBJECT(&uc->io_mem_rom));