diff --git a/base/base_tests/string_utils_test.cpp b/base/base_tests/string_utils_test.cpp
index 99dcab7d4..1df5cf608 100644
--- a/base/base_tests/string_utils_test.cpp
+++ b/base/base_tests/string_utils_test.cpp
@@ -23,7 +23,7 @@ UNIT_TEST(LowerUniChar)
 {
   // Load unicode case folding table.
 
-  static char constexpr kFile[] = "./data/CaseFolding.test";
+  static char constexpr kFile[] = "./data/test_data/CaseFolding.test";
   std::ifstream file(kFile);
   TEST(file.is_open(), (kFile));
 
diff --git a/data/CaseFolding.test b/data/test_data/CaseFolding.test
similarity index 100%
rename from data/CaseFolding.test
rename to data/test_data/CaseFolding.test