diff --git a/qemu/unicorn_common.h b/qemu/unicorn_common.h
index 84bbb9f1..5176430e 100644
--- a/qemu/unicorn_common.h
+++ b/qemu/unicorn_common.h
@@ -58,9 +58,9 @@ static void release_common(void *t)
 
     // these function is not available outside qemu
     // so we keep them here instead of outside uc_close.
+    memory_free(s->uc);
     address_space_destroy(&s->uc->address_space_memory);
     address_space_destroy(&s->uc->address_space_io);
-    memory_free(s->uc);
     /* clean up uc->l1_map. */
     tb_cleanup(s->uc);
     /* clean up tcg_ctx->code_gen_buffer. */