diff --git a/Rakefile b/Rakefile
index f2126b7dd..e156459b8 100644
--- a/Rakefile
+++ b/Rakefile
@@ -11,6 +11,8 @@ def test_libs(mode='dblib')
 end
 
 def test_files
+  return Dir.glob(ENV['TEST_FILES']).sort if ENV['TEST_FILES']
+  
   files = Dir.glob("test/cases/**/*_test_sqlserver.rb").sort
   ar_path = Gem.loaded_specs['activerecord'].full_gem_path
   ar_cases = Dir.glob("#{ar_path}/test/cases/**/*_test.rb")