diff --git a/Makefile b/Makefile
index cef30af..d7a7101 100644
--- a/Makefile
+++ b/Makefile
@@ -18,11 +18,11 @@ lint: .rocks
 
 .PHONY: test
 test: .rocks
-	.rocks/bin/luatest -c -v ./test.lua
+	TEST_DISABLE_INBUILT_CHECKS=true .rocks/bin/luatest -c -v ./test.lua
 
 .PHONY: perf
 perf:
-	.rocks/bin/luatest -c ./perftest.lua
+	TEST_DISABLE_INBUILT_CHECKS=true .rocks/bin/luatest -c ./perftest.lua
 
 .PHONY: clean
 clean:
diff --git a/perftest.lua b/perftest.lua
index 13502e7..cb00229 100755
--- a/perftest.lua
+++ b/perftest.lua
@@ -1,14 +1,20 @@
 #!/usr/bin/env tarantool
 
-local t = require('luatest')
-
-local checks = require('checks')
 local json = require('json')
 local log = require('log')
 local uuid = require('uuid')
 
+local t = require('luatest')
+
 local g = t.group('checks_performance')
 
+if os.getenv('TEST_DISABLE_INBUILT_CHECKS') then
+    -- Clean up built-in checks to run tests with repository module.
+    package.preload['checks'] = nil
+    package.loaded['checks'] = nil
+end
+local checks = require('checks')
+
 local args = {
     ['nil'] = nil,
     ['string'] = 'str',
diff --git a/test.lua b/test.lua
index 151278f..709f910 100755
--- a/test.lua
+++ b/test.lua
@@ -1,12 +1,18 @@
 #!/usr/bin/env tarantool
 
-local t = require('luatest')
-
 local json = require('json')
-local checks = require('checks')
+
+local t = require('luatest')
 
 local g = t.group('checks')
 
+if os.getenv('TEST_DISABLE_INBUILT_CHECKS') then
+    -- Clean up built-in checks to run tests with repository module.
+    package.preload['checks'] = nil
+    package.loaded['checks'] = nil
+end
+local checks = require('checks')
+
 ------------------------------------------------------------------------------
 local current_file = debug.getinfo(1, 'S').short_src