diff --git a/repertory/repertory_test/include/fixtures/winfsp_fixture.hpp b/repertory/repertory_test/include/fixtures/winfsp_fixture.hpp
index 71d7d2a1..c8e43065 100644
--- a/repertory/repertory_test/include/fixtures/winfsp_fixture.hpp
+++ b/repertory/repertory_test/include/fixtures/winfsp_fixture.hpp
@@ -75,7 +75,7 @@ protected:
   static void SetUpTestCase() {
     current_directory = std::filesystem::current_path();
 
-    mount_location = utils::string::to_lower("U:");
+    mount_location = utils::string::to_lower(std::string{"U:"});
 
     const auto mount_s3 = [&]() {
       {
@@ -164,7 +164,7 @@ protected:
             });
 
         mount_location2 = mount_location;
-        mount_location = utils::string::to_lower("V:");
+        mount_location = utils::string::to_lower(std::string{"V:"});
 
         auto cfg_directory = utils::path::combine(test_directory, {"cfg2"});
         ASSERT_TRUE(utils::file::directory(cfg_directory).create_directory());