diff --git a/src/test/fs_tests.cpp b/src/test/fs_tests.cpp
--- a/src/test/fs_tests.cpp
+++ b/src/test/fs_tests.cpp
@@ -16,7 +16,7 @@
     fs::path tmpfolder = GetDataDir();
     // tmpfile1 should be the same as tmpfile2
     fs::path tmpfile1 = tmpfolder / "fs_tests_₿_🏃";
-    fs::path tmpfile2 = tmpfolder / L"fs_tests_₿_🏃";
+    fs::path tmpfile2 = tmpfolder / "fs_tests_₿_🏃";
     {
         fsbridge::ofstream file(tmpfile1);
         file << "bitcoin";