diff --git a/tests/test_file_helper.cpp b/tests/test_file_helper.cpp
index 3b61ff2c..53c7e83a 100644
--- a/tests/test_file_helper.cpp
+++ b/tests/test_file_helper.cpp
@@ -136,7 +136,7 @@ TEST_CASE("file_event_handlers", "[file_helper]") {
         events.clear();
         helper.close();
         REQUIRE(events == std::vector<flags>{flags::before_close, flags::after_close});
-        REQUIRE(file_contents(TEST_FILENAME) == "after_open\nbefore_close\n");
+        REQUIRE(file_contents(SPDLOG_FILENAME_T(TEST_FILENAME)) == "after_open\nbefore_close\n");
 
         helper.reopen(true);
         events.clear();
diff --git a/tests/utils.cpp b/tests/utils.cpp
index 5a4a4d19..c566152d 100644
--- a/tests/utils.cpp
+++ b/tests/utils.cpp
@@ -18,7 +18,7 @@ void prepare_logdir() {
 #endif
 }
 
-std::string file_contents(const std::string &filename) {
+std::string file_contents(const std::filesystem::path &filename) {
     std::ifstream ifs(filename, std::ios_base::binary);
     if (!ifs) {
         throw std::runtime_error("Failed open file ");
@@ -26,7 +26,7 @@ std::string file_contents(const std::string &filename) {
     return std::string((std::istreambuf_iterator<char>(ifs)), (std::istreambuf_iterator<char>()));
 }
 
-std::size_t count_lines(const spdlog::filename_t &filename) {
+std::size_t count_lines(const std::filesystem::path &filename) {
     std::ifstream ifs(filename);
     if (!ifs) {
         throw std::runtime_error("Failed open file ");
diff --git a/tests/utils.h b/tests/utils.h
index af66a937..949f8f55 100644
--- a/tests/utils.h
+++ b/tests/utils.h
@@ -8,7 +8,7 @@ std::size_t count_files(const std::string &folder);
 
 void prepare_logdir();
 
-std::string file_contents(const std::string &filename);
+std::string file_contents(const std::filesystem::path &filename);
 
 // std::size_t count_lines(const std::string &filename);
 std::size_t count_lines(const std::filesystem::path &filename);
@@ -17,4 +17,4 @@ void require_message_count(const std::filesystem::path &filename, const std::siz
 
 std::size_t get_filesize(const std::string &filename);
 
-bool ends_with(std::string const &value, std::string const &ending);
\ No newline at end of file
+bool ends_with(std::string const &value, std::string const &ending);