diff --git a/.luacheckrc b/.luacheckrc
index 4b829f3dc457d0a37a3065bb990341ac3c8d3ab8..5468ade25d1d1b4d853c742e0c98d7c04c0f71d0 100644
--- a/.luacheckrc
+++ b/.luacheckrc
@@ -46,7 +46,7 @@ exclude_files = {
     "test/var/**/*.lua",
     "test/vinyl/**/*.lua",
     "test/wal_off/**/*.lua",
-    "test/xlog/**/*.lua",
+    "test/xlog/*.test.lua",
     "test/xlog-py/**/*.lua",
     "third_party/**/*.lua",
     ".rocks/**/*.lua",
diff --git a/test/xlog/panic.lua b/test/xlog/panic.lua
index 2d4eb8d2e3490479367c09f81ad426f95cd65f06..0fa855421a9a6d489560a2063f576732386ea97c 100644
--- a/test/xlog/panic.lua
+++ b/test/xlog/panic.lua
@@ -1,5 +1,5 @@
 #!/usr/bin/env tarantool
-os = require('os')
+local os = require('os')
 
 box.cfg{
     listen              = os.getenv("LISTEN"),
diff --git a/test/xlog/upgrade/2.1.3/gh-4771-upgrade-sequence/fill.lua b/test/xlog/upgrade/2.1.3/gh-4771-upgrade-sequence/fill.lua
index b159f2b6708d67eb52238cfacd95400b740d54f4..8e9a9d13d30e871180996007dd8f9f48c37d68a1 100644
--- a/test/xlog/upgrade/2.1.3/gh-4771-upgrade-sequence/fill.lua
+++ b/test/xlog/upgrade/2.1.3/gh-4771-upgrade-sequence/fill.lua
@@ -1,14 +1,14 @@
 box.cfg{}
-s1 = box.schema.create_space('test1')
-pk = s1:create_index('pk', {sequence = true})
+local s1 = box.schema.create_space('test1')
+s1:create_index('pk', {sequence = true})
 s1:replace{box.NULL}
 
-seq2 = box.schema.sequence.create('seq2')
-s2 = box.schema.create_space('test2')
-pk = s2:create_index('pk', {sequence = 'seq2'})
+box.schema.sequence.create('seq2')
+local s2 = box.schema.create_space('test2')
+s2:create_index('pk', {sequence = 'seq2'})
 s2:replace{box.NULL}
 
-seq3 = box.schema.sequence.create('seq3')
+local seq3 = box.schema.sequence.create('seq3')
 seq3:next()
 
 box.snapshot()
diff --git a/test/xlog/xlog.lua b/test/xlog/xlog.lua
index 004096d2db84dd22d3e325b64ba7fd8c83fba28d..aaf1a0ae61673ea2d4c8ddf7cf5861594313716c 100644
--- a/test/xlog/xlog.lua
+++ b/test/xlog/xlog.lua
@@ -1,5 +1,5 @@
 #!/usr/bin/env tarantool
-os = require('os')
+local os = require('os')
 
 box.cfg{
     listen              = os.getenv("LISTEN"),