diff --git a/.clang-tidy b/.clang-tidy
index 3dcd93a..bbdad5d 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -215,6 +215,7 @@
 misc-uniqueptr-reset-release,
 misc-unused-using-decls,
 performance-faster-string-find,
+performance-for-range-copy,
 performance-implicit-conversion-in-loop,
 performance-inefficient-algorithm,
 performance-inefficient-vector-operation,
diff --git a/test/utest.cpp b/test/utest.cpp
index 831d9b3..8e3edd3 100644
--- a/test/utest.cpp
+++ b/test/utest.cpp
@@ -408,7 +408,7 @@
 TEST_F(FileTest, TestMergeFiles)
 {
     std::string retFile = tmpDir + "/retFile";
-    for (auto file : srcFiles)
+    for (const auto& file : srcFiles)
     {
         command("cat " + file + " >> " + retFile);
     }