diff --git a/.luacheckrc b/.luacheckrc
index f61f6d5cb4daf040527d8374e07bc92ad6645b02..00611176e74bde4e2415bba0b3bb86bb00e02176 100644
--- a/.luacheckrc
+++ b/.luacheckrc
@@ -39,7 +39,6 @@ exclude_files = {
     "test/box/lua/require_mod.lua",
     -- Unused source file, to be dropped (gh-5169).
     "test/box/lua/test_init.lua",
-    "test/box-py/**/*.lua",
     "test/box-tap/**/*.lua",
     "test/engine/**/*.lua",
     "test/engine_long/**/*.lua",
diff --git a/test/box-py/box.lua b/test/box-py/box.lua
index e9403774c7a3e5d481a3e76d774c83b6ee8c93d3..35a087de92957c577ce58098d35b460b8dab5f10 100644
--- a/test/box-py/box.lua
+++ b/test/box-py/box.lua
@@ -1,5 +1,5 @@
 #!/usr/bin/env tarantool
-os = require('os')
+local os = require('os')
 
 box.cfg{
     listen              = os.getenv("LISTEN"),